Emel AksuAide de Cuisine
23 May 2026

A quick version of Russia's traditional rye bread drink kvass, this is made by toasting leftover stale rye bread in the air fryer, steeping it in hot water, and lightly fermenting it with a small amount of yeast over a few hours. Unlike the traditional kvass that ferments for days, this one is ready to drink the same day.

Step by Step

How to make it?

1

Toast the bread

10 min

Arrange the sliced stale rye bread in the air fryer basket and toast at 190°C for 8-10 minutes until the edges darken. Without an air fryer, toast for a similar time in a preheated oven.

2

Steep in hot water

120 min

Pour boiling water over the toasted bread in a bowl, cover, and let it steep for 2 hours.

3

Ferment

240 min

Strain the brew, squeezing the liquid out of the bread pieces, stir in the sugar and yeast once lukewarm, cover, and let it sit at room temperature for 4 hours until lightly fizzy.

4

Strain and chill

5 min

Strain the kvass through a fine sieve into bottles, add a few raisins, and chill in the refrigerator before serving.

Reminder

Make sure the water is only lukewarm when you add the yeast; hot water kills the yeast and fermentation never starts. Allergens: contains gluten (rye bread).

Editor's Note Editörün Notu

This quick version differs from the traditional days-long fermentation; it's lighter, less fizzy and less sour, designed to be drunk the same day.

Admin DadaGastro · verified in test kitchen
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