I've been trying to make various fermentations using raw milk I obtain from a local farm. I've been making mostly yogurt and kefir but unfortunately most of my attempts to create these products result in a big chunk of curd surrounded by watery whey that smell of sour milk as opposed to delicious yogurt.
For both the yogurt and kefir, I've used various starters but the result is almost always the same despite the use of a yogurt-maker and careful attention to directions. Note: I have not had this problem using pasteurized milk to make yogurt. What is going wrong here? Is the natural bacteria present in the milk somehow interfering with my attempts? Can anyone offer some tips?
