- 16 Ounces fresh whole milk (about 500 mL)
- (Culture option 1) 20 grams of hydrated and active milk kefir grains
- (Culture option 2) 2 tablespoons store-bought milk kefir with live active cultures
- See notes below on raw milk and heating milk.
- Add the milk to a glass jar.
- Add in the cultures and stir the milk gently.
- Place a tight-weave breathable cloth lid on the jar and secure it with a rubber band.
- Allow the milk to ferment for 24-48 hours. (Aim for less time (24 hours) if it is warm in your house)
- When the kefir is finished, you may need to stir it. It should be thick, pleasantly tart, and you should see “rivers” on the sides of the jar after pouring.
- After fermentation, if using kefir grains, strain off the kefir grains and add them to a fresh batch of milk. Store the finished kefir in the fridge in a sealed bottle for up to a month. If you used store-bought kefir to culture, culture your next batch with a tablespoon of the finished milk kefir.