This kind of sour milk is a secret weapon for baking projects, particularly for those setting out to make morning pancakes.

Although unintentional, not getting through a gallon of milk before it starts to sour can happen, no matter how rare. It was more common before refrigerators became standard appliances in homes, which ...

Add Yahoo as a preferred source to see more of our stories on Google. As milk ages, bacteria break down the milk's natural sugars and convert them into lactic acid. The result is a tangier ingredient ...