Mesophilic cultures need to have a Controled Mother kind of like stated in the article. You need to heat your milk to 180 degrees for the Controled Mother. This is because if you don’t, the enzymes in the raw milk will eventually take over and kill your mesophilic culture.
Once you have made the Controled Mother, you can use a little of it to start your next batch or unheated or just warmed raw milk.
You can keep Mothers off of the unheated raw milk for a few batches until the mesophilic culture gets too weak to work properly. Then you will need to star with some from the Controled Mother again.
I make a batch of my Controled Mother and freeze in 1/4 cup portions that way I only have to make a Controled Mother once and I’m good for a long time.

Sally Fallon Morell replies: I don’t know either, but I am sure it is safe to eat.

I have heard that adding hot pepper stems to raw milk will produce yogurt.
There are some bacteria present on the pepper stems but most will already be in the raw milk.

When you freeze it – it will be a different texture. With the solids and liquids less mixed but still able to use in smoothies and recipes. Try it!

I used a frozen store bought greek yogurt as the mother and it turned out great!

“Antibiotic” does not equate to a drug, like those prescribed by doctors. The word is broad and means anything which can act as an agent against bacteria. In the case of drugs which are antibiotic, the effect is indiscriminate and kills both harmful and beneficial bacteria. In the case of a natural antibiotic, such as in yogurt, only the harmful bacteria are killed. A natural antibiotic is entirely safe and most certainly a desired benefit of the product.