Kefir is the Russian word for a sour-tasting drink made with cow's milk. It's often confused with yogurt. This week on the Local Food Report, Elspeth Hay talks with a woman in Wellfleet making her own kefir and learns how the beverage is different from other fermented dairy products.
You can find a recipe for kefir with how-to steps and photos from Helen Miranda Wilson on Elspeth's blog, Diary of a Locavore.
This piece first aired in October, 2014.