Lacto-fermentation is a method of food procressing. It uses good bacteria, fungi, or yeasts to give food a different aroma, flavor, or texture and extend shelf life. Fermentation is one of the oldest ...

Kefir, pronounced kee-feer, is a drink made from the fermented milk from a cow, goat, or sheep. Water kefir is similar but has a water base instead of milk. Kefir grains have yeast and good bacteria.

Humans have been tinkering with ways to ferment milk into more shelf-stable products like kefir, cheese, and yogurt for thousands of years. Today, even though most commercially produced yogurt depends ...