Are you looking to eat more fermented foods? If so, you should add kefir to your grocery cart. It's high in probiotics and essential nutrients—and they are responsible for the many benefits of kefir, ...

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.

Fermented foods have been staples in the human diet since the dawn of time, but lately, it seems that they're having a moment, with new products popping up on shelves every week. From kimchi to ...