Kefir vs Buttermilk

A side-by-side guide to substituting Buttermilk for Kefir (or vice versa).

Quick answer

Buttermilk works as a 1:1 swap for Kefir in most recipes.

Side-by-side

Kefir

Base unit: cup

Read the full guide: Kefir

Buttermilk

Conversion: 1:1 substitution (use the same amount)

Tags: common

Notes: Similar acidity and thin consistency; ideal for baking, marinades, and drinks. Use 1:1 substitution in all recipes.

Read the full guide: Buttermilk

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When to use Buttermilk instead of Kefir

Similar acidity and thin consistency; ideal for baking, marinades, and drinks. Use 1:1 substitution in all recipes. The conversion is 1:1 substitution (use the same amount).

Common questions

Can I substitute Buttermilk for Kefir?

Yes — Similar acidity and thin consistency; ideal for baking, marinades, and drinks. Use 1:1 substitution in all recipes. Ratio: 1:1 substitution (use the same amount).

What's the conversion ratio for Kefir to Buttermilk?

1:1 substitution (use the same amount). For other quantities, use the SubSwap calculator.

Are Kefir and Buttermilk interchangeable?

They are similar in most uses, but Similar acidity and thin consistency; ideal for baking, marinades, and drinks..

Is Buttermilk a better substitute than other options for Kefir?

Buttermilk is one of the options SubSwap lists for Kefir. The 'best' choice depends on your recipe — see the full list of Kefir substitutes.

Looking for more Kefir substitutes beyond Buttermilk?

See all Kefir swaps →