Milk Kefir

Milk kefir is thicker, tangier, and more probiotic-rich than any yogurt. Made with live kefir grains — a symbiotic culture of bacteria and yeast — it ferments in 24 hours at room temperature. Once you have grains, it's free food for life.

What You Need

• 2 cups whole milk (raw or pasteurized — not ultra-pasteurized, which kills the grains)
• 1–2 tbsp live milk kefir grains
• A clean glass jar and a fine mesh strainer

Method

1. Place kefir grains in a clean glass jar. Add milk. Stir gently.
2. Cover with a cloth or loose lid. Leave at room temperature for 18–24 hours.
3. It's ready when it has thickened and smells pleasantly tangy. In warmer weather it ferments faster.
4. Pour through a fine mesh strainer, catching the grains. Bottle the kefir and refrigerate.
5. Rinse grains gently with room-temperature filtered water. Transfer to a fresh jar of milk and repeat.
6. Grains grow over time — share extras with other homesteaders.

Tips & Notes

• Kefir grains can last indefinitely with proper care. They can be refrigerated in milk for up to 2 weeks without feeding.
• Second ferment: bottle with fruit or vanilla and leave sealed at room temperature 12–24 hours for fizzy, flavored kefir.
• Use overfermented kefir (too sour) in baking or smoothies — nothing goes to waste.

More Kitchen guides →