If you’re looking into how to make kefir at home, there’s a good chance you already know a little of it’s history. Feel free to skip ahead here! For those that don’t know, kefir is a fermented drink, usually made from milk, and full of probiotics. (Probiotics are the healthy bacteria that live in your gut. They are imperative for good health, and if you’ve taken antibiotics in your lifetime there’s a chance that your body has fewer probiotics than it should. Antibiotics – while great for ridding us from infection – can’t distinguish between good and bad bacteria. They kill off your good bacteria too.