Frequently marketed as "drinkable yogurt," kefir is often sold in bottles for that exact reason. Kefir is a liquid milk drink ...

Kefir is a fermented dairy product that contains plenty of probiotics, but this tart beverage doesn't last forever. Here's ...

mushroom powder and MCT oil – so adding a small glass of kefir into the mix wasn’t a tall order. At first I felt a little unsettled by the pale yogurt-like liquid and the smell of it.