Kefir is a tangy, probiotic-rich drink made by fermenting cow’s or goat’s milk or water with a culture starter called kefir grains — small clusters of bacteria and yeast that resemble tiny cauliflower ...

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 ...

Kefir is a popular fermented drink made of milk and kefir grains that contains probiotics (gut-healthy bacteria). While consuming kefir may offer many health benefits, there are also some potential ...

Medically reviewed by Laura Iu, R.D., C.D.N. I picked up my first bottle of kefir years ago after a clinical dietitian friend told me about it. I had never even heard of kefir, but it was a dietary ...

A wooden spoon and metal strainer sit above a glass jar full of kefir. After fermentation, kefir is poured through a strainer, leaving behind gelatinous grains ...

You could say that kefir has it all. The fermented milk product—which is made from milk and “kefir grains” consisting of bacteria and yeast—is rich in probiotics, B vitamins, vitamin C, and calcium.

Kefir's been quietly bubbling away for centuries (originating from parts of Eastern Europe and Southwest Asia) but only recently started getting the credit it deserves in the Western world as a ...