Fruit Kvass Recipe

A quart jar with a fermenting lid full of strawberries and blueberries in water sitting on a plate on a counter with kitchen decor visible in the background.

This refreshing fruit kvass is a lightly fermented drink with a gentle fizz and vibrant flavor. Made with fresh fruit, ginger, and honey, it’s an easy and delicious homemade alternative to soda or juice.

Course Beverages

Cuisine Russian

Cook Time 10

Additional Time 2

Total Time 2 10

Servings servings

Calories 47kcal

Author Diane Gail

Ingredients

3/4 cup blueberries
3/4 cup strawberries
2 teaspoons fresh ginger
1 tablespoons honey
1 1/2 cups water

US Customary - Metric

Instructions

Prep ingredients: Rinse and cut strawberries and blueberries. Peel and slice ginger.
Add to jar: Place berries in a quart jar, filling it about 2/3 full.
Add remaining ingredients: Add ginger and honey, then fill the jar with water, leaving 1" headspace.
Seal jar: Cover with a fermenting lid or a loosely tightened plastic lid.
Set to ferment: Place jar on a plate to catch overflow and leave at room temperature away from direct sunlight.
Agitate daily: Shake gently twice a day to prevent mold and encourage fermentation.
Burp if needed: If using a plastic lid, loosen briefly once daily to release gases, then re-tighten.
Check for fizz: After 2–4 days, once bubbles form and flavor is tangy, it’s ready.
Strain and store: Strain fruit and transfer kvass to a clean jar or bottle. Refrigerate and enjoy cold.

Notes

Use ripe, unbruised fruit: Fresh, ripe berries provide the best flavor and natural sugars to support fermentation.
Keep out of direct sunlight: Store the jar in a cool, dark spot to help control the fermentation process.
Leave headspace: Always leave at least 1 inch of space at the top of the jar to prevent overflow during fermentation.
Track fermentation: Label jars with the start date and taste daily after the first 24 hours to find your preferred tanginess.
Account for temperature: Fermentation time varies — warmer rooms speed it up, so check flavor more frequently in warmer months.
Experiment with flavors: Try swapping out berries or adding herbs like mint or basil for a fresh twist.

Nutrition