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Barb Hodgens loves to cook with alternative, healthy whole food ingredients, with a focus on gut health. Barb has overcome her own gut health issues through healthy eating. Share your ideas, comments and photos at the end of this post :)
We love to make yogurt here at Luvele and we love to experiment, so when queries and feedback started coming in from our customers about using our yogurt makers for ‘Undoctored’ L.Reuteri yogurt, we naturally got curious.
As it turns out, your Luvele yogurt maker has all the features you need to take all the guesswork out of making L Reuteri yogurt simply and reliably. Whether you have been struggling to make it or whether this is the first time you’ve heard about L. reuteri yogurt, our maker, step by step method and trouble-shooting tips are sure to help. But first, what exactly is L.Reuteri yogurt?
It is a type of yogurt that is abundant in a particular species of bacteria that cardiologist and author Dr. William Davis has found to have many amazing benefits. Dr. Davis (author of the ‘Wheat Belly’ series and 'Undoctored - Why Health Care Has Failed You and How You Can Become Smarter Than Your Doctor’) has started a movement of sorts, and his readers and followers believe that real, powerful solutions for health already exist and the starting place is with food!
Dr Davis followed up on initial research into the benefits of Lactobacillus bacteria found in fermented foods like kefir and yogurt. Of the nearly 200 known species of Lactobacillus, however, one species stood out: Lactobacillus reuteri. Studies have demonstrated that large dose L. reuteri probiotic supplementation provided a ton of amazing health benefits.
Davis began experimenting with fermenting this species and ‘Undoctored’ L. reuteri yogurt was born. He stresses however, that it’s not about eating yogurt; and that none of the specified benefits come from consuming conventional yogurt or the yogurt of other homemade yogurt recipes, including methods found on the Luvele website. Davis’s formula is specifically about increasing the counts of ATCC PTA 6475 and DSM 17938 strains of L. reuteri bacteria and homemade yogurt is just the vehicle he uses to accomplish this. And unlike conventional yogurt making methods, his approach maximises bacterial counts by adding prebiotic fibre to the yogurt mixture before fermentation to provide ‘food for the microorganisms’.
Studies that experimented with L. reuteri yogurt consumption in animals & humans suggested dramatic health benefits for both. These include the ability to:
Dr Davis says; “Put all these effects together—caloric reduction, increased skin health, increased bone density, fat loss, muscle gain, reduced insulin resistance, etc.—and you have one of the most powerful anti-aging, youth-preserving strategies I have ever come across.”
Dr Davis has a large community of followers experimenting and making L. reuteri yogurt at home. Although there are no formal bacterial counts on this yogurt per CFUs (colony forming units) to date, people who consume 1/2 cup per day are reporting many of the beneficial effects listed above.
Strain specificity is important. While there are other strains of L. Reuteri available, Dr Davis has no evidence to suggest they will produce the same health benefits. His recipe specifically uses the bacterial strains, L. reuteri ATCC PTA 6475 and DSM 17938 that are available in chewable tablet form from BioGaia. Just Google “BioGaia Gastrus” to find a retailer or company that can ship them to you.
The yogurt requires 10 crushed BioGaia Gastrus tablets. Why so many tablets? There are only 200 million CFUs (live organisms) in each tablet and Dr Davies has not observed any substantial health benefits ingesting the tablets. Studies into L. reuteri probiotic demonstrate that supplementation must be around one billion CFU in a dose. One BioGaia probiotic tablet does not have these bacterial numbers and taking multiple tablets (5 or more) a day would quickly become a very expensive habit.
By making yogurt with the probiotics, you are essentially creating the right environment for the live organisms to multiply into the trillion (1000 billion) CFU range. The first tub of yogurt made, using 10 tablets, may seem expensive, but this ‘mother batch’ can go on to re-inoculate or seed further batches.
Prebiotics are indigestible plant fibres that feed the probiotics or good bacteria already live inside the large intestine. The more food, or prebiotics, that probiotics have to eat, the more efficiently these live bacteria can work for us and or health. Dr Davies applied this concept to his yogurt experiments and added a small amount of prebiotic fibre to the milk as food for the L.reuteri strains while in their long fermentation. Good, neutral tasting sources of prebiotic are:
Use 2 tablespoons per quart (or litre) of milk. Prebiotic fibres become viscous when mixed with liquid and help to thicken the milk into yogurt consistency.
L.reuteri grows best at a lower temperature of around 100 degrees F / 37.7 degrees C. Many yogurt makers on the market (or other methods for making yogurt at home) either do not specify the temperature they heat to or incubate at a hotter baseline than required for L. reuteri yogurt. The Luvele Pure yogurt maker has 3 temperature settings - 97, 100, and 104 degrees F. (36, 38 & 40 C). Furthermore, the unique water-bath technology evenly distributes and regulates the temperature over a long period of time making it the perfect environment for this strain of bacteria to happily proliferate.
L.reuteri yogurt requires a long fermentation. After 12 hours in the maker the milk will have turned to yogurt but much more time fermenting is necessary to generate the bacterial counts that Dr Davis desires for therapeutic benefits. He recommends that L. reuteri yogurt ferment for 30 to 36 hours. The 36-hour digital timer on the Luvele pure yogurt maker makes this long incubation stress free. If you have an old model yogurt maker with a 24-hour timer, L reuteri yogurt can be set over 2 incubations. Set the first, at the maximum ‘24 hour’ setting, then when the timer goes off, simply reset the maker for another 6 - 12 hours. Then refrigerate.
Dr Davis’s method recommends ‘half-and-half’ cow’s milk. Half-and-half (also known as ‘half cream’ in the UK) is a blend of equal parts whole milk and cream and has a 10 - 18% fat content. If half-and-half is not available in your country, use UHT (long life milk) or choose organic milk, that is free of pesticides, hormones, antibiotics, fertilisers and GMOs. For thickest results also choose full cream milk. Do not use skim or low-fat milk varieties.
The best plant-based milk option for L.reuteri yogurt is additive free canned coconut milk or a combination of coconut milk and coconut cream. Click here for the method.
A portion of your first jar of yogurt – the ‘mother batch’ of yogurt (with 10 crushed probiotic tablets) can then be used to re-inoculate your next jar of L.reuteri yogurt. Simply follow the method detailed below but replace the 10 crushed tablets with a third a cup of L.reuteri yogurt.
To ensure the L reuteri strains stay pure and uncontaminated in homemade yogurt, we recommend re-inoculation be keep to a minimum. To ensure that the yogurt stays abundant with the L. reuteri strains and not a breeding ground for other, unwanted bacteria, we recommend starting a fresh mother batch after 4-5 re-inoculations. This may be sooner if you notice any significant changes to the texture, smell or taste. Note that with each re-inoculation the yogurt will thicken. Some people report yogurt firm enough, to stand a spoon upright!
After chilling, the consistency and thickness of the first batch of yogurt will depend on the milk you used. It’s not unusual for the first batch to have the consistency of drinking yogurt and separation is common. A separated jar contains the same quantity of beneficial bacteria as a non-separated jar. The L. Reuteri are present in both the solids (curds) and the translucent liquid (whey), and therefore both should be consumed.
Subsequent batches will be thicker. To thicken early batches of L.reuteri yogurt you can pour off or strain the whey following this method. Whey is highly nutritious and can be used in a variety of health-giving ways. Adding it into smoothies is a delicious way to get a probiotic boost. For more creative ideas refer to this post.
UPDATE: July 2019 – The method below is true to Dr Davis’s original recipe however because half and half milk is not available in Australia the results we share may be different to what you are experiencing using the appropriate milk. We have continued to experiment and are pleased to report that we have developed a new method that produces consistent, thick and creamy yogurt every time. You can find new method here.
Before you begin it is important to sterilise the Luvele yogurt making glass jar, lid and any utensils you use, in boiling hot water. The danger of not sterilising is that other bacteria may overpower your culture and affect the quality of your yogurt.
1 Litre of half-and-half cow’s milk (or full cream/whole milk)
2 tablespoons prebiotic fibre (inulin powder or unmodified potato starch)
10 tablets of BioGaia Gastrus, crushed or 1/3 cup of L.reuteri yogurt from a previous batch
1. Before you begin it is important to sterilise the Luvele yogurt making glass jar, lid and any utensils you use, in boiling hot water. The danger of not sterilising is that other bacteria may overpower your culture and affect the quality of your yogurt.
2. To make the mother batch, crush 10 probiotic tablets into a fine powder using a mortar and pestle, or other hard object on a clean, dry surface.
3. Spoon the prebiotic fibre into a small bowl.
4. Add 1/3 cup of milk to the fibre and mix to form a lump-free slurry.
5. Mix in the crushed tablets (or ⅓ cup l reuteri yogurt from a previous batch)
6. Pour the milk into the Luvele yogurt making jar
7. Pour the slurry into the milk and stir to incorporate.
8. Put the lid firmly on the yogurt making jar and place into the yogurt maker. Pour water slowly into the base. The water must not be filled over the ‘tall line’ indicated on the inside wall of the maker. Place the cover lid on top. The milk is now ready to begin fermentation.
9. Use the digital control panel to set the temperature to 36°C or 38°C, (we used 36°C) and the time to 36-hours and then press ‘confirm’ to begin incubation. (24-hours on old model makers. After 24 hours the timer will go off. Reset the timer for another 6-12 hours.)
10. Please note, that condensation will have collected under the cover lid during fermentation. Take care removing it and allow the water to drip into the water bath, instead of your bench.
11. Switch the yogurt maker off and remove the yogurt jar. Straight from the maker the L.reuteri yogurt will be runny and warm, it may also have separated into layers. Don’t be alarmed, this is normal. Do not stir the yogurt while it is warm.
12. Place the yogurt in the fridge for at least 6 hours to set then enjoy.
Don’t forget to reserve a third of a cup for your next batch of yogurt!
Luvele’s L Reuteri Yogurt Disclaimer: The team at Luvele are learning that making L Reuteri yogurt is still very experimental. Dr Davis who first came up with the idea of L Reuteri yogurt, himself has changed his recipe a number of times to try to create a more consistent outcome. However, may people still struggle with inconsistent results.
Please understand, at the end of the day, the L reuteri probiotic DOES NOT make yogurt, traditional yogurt that is, you can only try to make a yogurt like product.
Also note; we have spoken directly with BioGaia in Sweden who are the manufactures of the L Reuteri probiotic, and they themselves strongly point out that L Reuteri was not designed or developed for making yogurt.
It is our belief at Luvele that the combination of ingredients in BioGaia’s L Reuteri probiotic are not always equal from tablet to tablet. It is possible they contribute to the unreliability / inconsistent results. Making yogurt with the L Reuteri strain is unquestionably trying to get the tablets to do something they were never designed to do.
Therefore, this it really a food hacking exercise that can result in inconsistent outcomes.
We love to make yogurt here at Luvele and we love to experiment, so when queries and feedback started coming in from our customers about using our yogurt makers for ‘Undoctored’ L.Reuteri yogurt, we naturally got curious.
As it turns out, your Luvele yogurt maker has all the features you need to take all the guesswork out of making L Reuteri yogurt simply and reliably. Whether you have been struggling to make it or whether this is the first time you’ve heard about L. reuteri yogurt, our maker, step by step method and trouble-shooting tips are sure to help. But first, what exactly is L.Reuteri yogurt?
It is a type of yogurt that is abundant in a particular species of bacteria that cardiologist and author Dr. William Davis has found to have many amazing benefits. Dr. Davis (author of the ‘Wheat Belly’ series and 'Undoctored - Why Health Care Has Failed You and How You Can Become Smarter Than Your Doctor’) has started a movement of sorts, and his readers and followers believe that real, powerful solutions for health already exist and the starting place is with food!
Dr Davis followed up on initial research into the benefits of Lactobacillus bacteria found in fermented foods like kefir and yogurt. Of the nearly 200 known species of Lactobacillus, however, one species stood out: Lactobacillus reuteri. Studies have demonstrated that large dose L. reuteri probiotic supplementation provided a ton of amazing health benefits.
Davis began experimenting with fermenting this species and ‘Undoctored’ L. reuteri yogurt was born. He stresses however, that it’s not about eating yogurt; and that none of the specified benefits come from consuming conventional yogurt or the yogurt of other homemade yogurt recipes, including methods found on the Luvele website. Davis’s formula is specifically about increasing the counts of ATCC PTA 6475 and DSM 17938 strains of L. reuteri bacteria and homemade yogurt is just the vehicle he uses to accomplish this. And unlike conventional yogurt making methods, his approach maximises bacterial counts by adding prebiotic fibre to the yogurt mixture before fermentation to provide ‘food for the microorganisms’.
Studies that experimented with L. reuteri yogurt consumption in animals & humans suggested dramatic health benefits for both. These include the ability to:
Dr Davis says; “Put all these effects together—caloric reduction, increased skin health, increased bone density, fat loss, muscle gain, reduced insulin resistance, etc.—and you have one of the most powerful anti-aging, youth-preserving strategies I have ever come across.”
Dr Davis has a large community of followers experimenting and making L. reuteri yogurt at home. Although there are no formal bacterial counts on this yogurt per CFUs (colony forming units) to date, people who consume 1/2 cup per day are reporting many of the beneficial effects listed above.
Strain specificity is important. While there are other strains of L. Reuteri available, Dr Davis has no evidence to suggest they will produce the same health benefits. His recipe specifically uses the bacterial strains, L. reuteri ATCC PTA 6475 and DSM 17938 that are available in chewable tablet form from BioGaia. Just Google “BioGaia Gastrus” to find a retailer or company that can ship them to you.
The yogurt requires 10 crushed BioGaia Gastrus tablets. Why so many tablets? There are only 200 million CFUs (live organisms) in each tablet and Dr Davies has not observed any substantial health benefits ingesting the tablets. Studies into L. reuteri probiotic demonstrate that supplementation must be around one billion CFU in a dose. One BioGaia probiotic tablet does not have these bacterial numbers and taking multiple tablets (5 or more) a day would quickly become a very expensive habit.
By making yogurt with the probiotics, you are essentially creating the right environment for the live organisms to multiply into the trillion (1000 billion) CFU range. The first tub of yogurt made, using 10 tablets, may seem expensive, but this ‘mother batch’ can go on to re-inoculate or seed further batches.
Prebiotics are indigestible plant fibres that feed the probiotics or good bacteria already live inside the large intestine. The more food, or prebiotics, that probiotics have to eat, the more efficiently these live bacteria can work for us and or health. Dr Davies applied this concept to his yogurt experiments and added a small amount of prebiotic fibre to the milk as food for the L.reuteri strains while in their long fermentation. Good, neutral tasting sources of prebiotic are:
Use 2 tablespoons per quart (or litre) of milk. Prebiotic fibres become viscous when mixed with liquid and help to thicken the milk into yogurt consistency.
L.reuteri grows best at a lower temperature of around 100 degrees F / 37.7 degrees C. Many yogurt makers on the market (or other methods for making yogurt at home) either do not specify the temperature they heat to or incubate at a hotter baseline than required for L. reuteri yogurt. The Luvele Pure yogurt maker has 3 temperature settings - 97, 100, and 104 degrees F. (36, 38 & 40 C). Furthermore, the unique water-bath technology evenly distributes and regulates the temperature over a long period of time making it the perfect environment for this strain of bacteria to happily proliferate.
L.reuteri yogurt requires a long fermentation. After 12 hours in the maker the milk will have turned to yogurt but much more time fermenting is necessary to generate the bacterial counts that Dr Davis desires for therapeutic benefits. He recommends that L. reuteri yogurt ferment for 30 to 36 hours. The 36-hour digital timer on the Luvele pure yogurt maker makes this long incubation stress free. If you have an old model yogurt maker with a 24-hour timer, L reuteri yogurt can be set over 2 incubations. Set the first, at the maximum ‘24 hour’ setting, then when the timer goes off, simply reset the maker for another 6 - 12 hours. Then refrigerate.
Dr Davis’s method recommends ‘half-and-half’ cow’s milk. Half-and-half (also known as ‘half cream’ in the UK) is a blend of equal parts whole milk and cream and has a 10 - 18% fat content. If half-and-half is not available in your country, use UHT (long life milk) or choose organic milk, that is free of pesticides, hormones, antibiotics, fertilisers and GMOs. For thickest results also choose full cream milk. Do not use skim or low-fat milk varieties.
The best plant-based milk option for L.reuteri yogurt is additive free canned coconut milk or a combination of coconut milk and coconut cream. Click here for the method.
A portion of your first jar of yogurt – the ‘mother batch’ of yogurt (with 10 crushed probiotic tablets) can then be used to re-inoculate your next jar of L.reuteri yogurt. Simply follow the method detailed below but replace the 10 crushed tablets with a third a cup of L.reuteri yogurt.
To ensure the L reuteri strains stay pure and uncontaminated in homemade yogurt, we recommend re-inoculation be keep to a minimum. To ensure that the yogurt stays abundant with the L. reuteri strains and not a breeding ground for other, unwanted bacteria, we recommend starting a fresh mother batch after 4-5 re-inoculations. This may be sooner if you notice any significant changes to the texture, smell or taste. Note that with each re-inoculation the yogurt will thicken. Some people report yogurt firm enough, to stand a spoon upright!
After chilling, the consistency and thickness of the first batch of yogurt will depend on the milk you used. It’s not unusual for the first batch to have the consistency of drinking yogurt and separation is common. A separated jar contains the same quantity of beneficial bacteria as a non-separated jar. The L. Reuteri are present in both the solids (curds) and the translucent liquid (whey), and therefore both should be consumed.
Subsequent batches will be thicker. To thicken early batches of L.reuteri yogurt you can pour off or strain the whey following this method. Whey is highly nutritious and can be used in a variety of health-giving ways. Adding it into smoothies is a delicious way to get a probiotic boost. For more creative ideas refer to this post.
UPDATE: July 2019 – The method below is true to Dr Davis’s original recipe however because half and half milk is not available in Australia the results we share may be different to what you are experiencing using the appropriate milk. We have continued to experiment and are pleased to report that we have developed a new method that produces consistent, thick and creamy yogurt every time. You can find new method here.
Before you begin it is important to sterilise the Luvele yogurt making glass jar, lid and any utensils you use, in boiling hot water. The danger of not sterilising is that other bacteria may overpower your culture and affect the quality of your yogurt.
1 Litre of half-and-half cow’s milk (or full cream/whole milk)
2 tablespoons prebiotic fibre (inulin powder or unmodified potato starch)
10 tablets of BioGaia Gastrus, crushed or 1/3 cup of L.reuteri yogurt from a previous batch
1. Before you begin it is important to sterilise the Luvele yogurt making glass jar, lid and any utensils you use, in boiling hot water. The danger of not sterilising is that other bacteria may overpower your culture and affect the quality of your yogurt.
2. To make the mother batch, crush 10 probiotic tablets into a fine powder using a mortar and pestle, or other hard object on a clean, dry surface.
3. Spoon the prebiotic fibre into a small bowl.
4. Add 1/3 cup of milk to the fibre and mix to form a lump-free slurry.
5. Mix in the crushed tablets (or ⅓ cup l reuteri yogurt from a previous batch)
6. Pour the milk into the Luvele yogurt making jar
7. Pour the slurry into the milk and stir to incorporate.
8. Put the lid firmly on the yogurt making jar and place into the yogurt maker. Pour water slowly into the base. The water must not be filled over the ‘tall line’ indicated on the inside wall of the maker. Place the cover lid on top. The milk is now ready to begin fermentation.
9. Use the digital control panel to set the temperature to 36°C or 38°C, (we used 36°C) and the time to 36-hours and then press ‘confirm’ to begin incubation. (24-hours on old model makers. After 24 hours the timer will go off. Reset the timer for another 6-12 hours.)
10. Please note, that condensation will have collected under the cover lid during fermentation. Take care removing it and allow the water to drip into the water bath, instead of your bench.
11. Switch the yogurt maker off and remove the yogurt jar. Straight from the maker the L.reuteri yogurt will be runny and warm, it may also have separated into layers. Don’t be alarmed, this is normal. Do not stir the yogurt while it is warm.
12. Place the yogurt in the fridge for at least 6 hours to set then enjoy.
Don’t forget to reserve a third of a cup for your next batch of yogurt!
Luvele’s L Reuteri Yogurt Disclaimer: The team at Luvele are learning that making L Reuteri yogurt is still very experimental. Dr Davis who first came up with the idea of L Reuteri yogurt, himself has changed his recipe a number of times to try to create a more consistent outcome. However, may people still struggle with inconsistent results.
Please understand, at the end of the day, the L reuteri probiotic DOES NOT make yogurt, traditional yogurt that is, you can only try to make a yogurt like product.
Also note; we have spoken directly with BioGaia in Sweden who are the manufactures of the L Reuteri probiotic, and they themselves strongly point out that L Reuteri was not designed or developed for making yogurt.
It is our belief at Luvele that the combination of ingredients in BioGaia’s L Reuteri probiotic are not always equal from tablet to tablet. It is possible they contribute to the unreliability / inconsistent results. Making yogurt with the L Reuteri strain is unquestionably trying to get the tablets to do something they were never designed to do.
Therefore, this it really a food hacking exercise that can result in inconsistent outcomes.
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