Homemade Milk Kefir

Name: Homemade Milk Kefir
Prep time: 10 min
Total time: 24 h 10 min
Cuisine: Eastern European
Ingredients: 2 tablespoons milk kefir grains; 1 L animal milk (cow, goat, sheep, or other)

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Homemade milk kefir is a creamy, tangy, slightly fizzy fermented drink made by culturing animal milk with live kefir grains. The grains are reusable indefinitely, making kefir an economical source of probiotics.

🌍Eastern European 🥗Vegetarian 🥗Gluten-Free 🏷️Milk kefir 🏷️Kefir grains Fermented beverage

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🏷️Fermentation

Total

24h 10m

Difficulty

Hard

Recipe Source

View original recipe

From Revolution Fermentation

Ingredients

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2 tablespoons milk kefir grains
1 L animal milk (cow, goat, sheep, or other)

2 Ingredients

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Instructions

1
Pour the milk into the jar.
2
Add the milk kefir grains.
3
Stir well.
4
Cover the container with a cloth held in place by a rubber band. For Kefirko kit users, partially screw upper lid on.
5
Let the jar ferment at room temperature for 24 hours (or a maximum of 48 hours). The milk will thicken and develop a tangy taste.
6
Filter through the sieve to separate the kefir grains from the liquid.
7
Your kefir is ready for consumption, and your grains are in prime condition to ferment a new quantity of milk.

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Tips & Notes

Written automatically by CookOS, not by the creator.

Pro tips

Ferment at consistent room temperature (68–78°F); cooler temps slow fermentation, warmer temps speed it but may produce more yeast and less tang.
Strain grains through a non-metal strainer immediately when kefir reaches desired tanginess—over-fermentation produces excessive acidity and serum separation.
Never wash grains under tap water; milk residue feeds them. Rinse briefly in filtered water only if debris appears.
Use live, healthy grains with a slightly cream color and rubbery texture; brown, slimy, or mold-spotted grains should be discarded.

Substitutions

Cow milk → Goat or sheep milk (ferments slightly faster, tangier result)
Room temperature fermentation → Warmer spot like inside oven with light on (speeds fermentation by 2–6 hours)

Storage & make-ahead

Store finished kefir in a sealed jar in the refrigerator for up to 1 week. Kefir grains keep indefinitely when fed fresh milk every 1–2 weeks and stored in the fridge.

Equipment

Non-metal strainer · Glass jars

Common Questions

Written automatically by CookOS, not by the creator.

How long does milk kefir take to ferment?

Milk kefir typically ferments in 12–24 hours at room temperature (68–78°F). Warmer temperatures ferment faster; cooler environments take longer.

Can I use non-dairy milk to make kefir?

Milk kefir grains are designed for animal milk (cow, goat, sheep). Non-dairy milks lack the lactose and nutrients grains need to thrive long-term.

How do I store and maintain kefir grains?

Keep grains in milk in the refrigerator between batches. Feed them fresh milk every 1–2 weeks. Store dormant grains in milk in the fridge for up to 2 months.

Is homemade milk kefir safe to drink?

Yes, when made with clean equipment and healthy grains. The fermentation process and beneficial bacteria create an acidic, inhospitable environment for pathogens.

What milk works best for kefir?

Whole milk produces the creamiest kefir. Low-fat and skim milk work but yield thinner results. Avoid ultra-pasteurized milk, which inhibits fermentation.