Older people know all about the good benefits of making yogurt because of the probiotics. The probiotics found in yoghurts at your local market are good but not great as they do not have many types of healthy bacteria usally 1 to 4. Special yoghurts are available that produce gcmaf https://www.gcmafproducts.com/store/p57/GLYCO-D_GCMAF_YOGURT_1LTR.html