Our appetite for fermented food and drink is showing no signs of being sated, with sourdough, kefir, kimchi, and now kombucha ...

Kefir is a fermented dairy drink made by adding kefir grains — cultures of yeast and lactic acid bacteria — to milk. These ...

While most kefir you’ll find in supermarkets will typically be dairy-based – it’s often compared to a yoghurt drink – there are a growing number of water kefirs on offer for anyone who ...

“You can get water kefir and dairy kefir,” Dr Rossi explains. “Dairy kefir is made with milk and contains lactose, unlike ...