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Fermented Grape Soda

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Fermented Grape SodaChristopher Testani

The ginger "bug," which jump-starts the fermentation, specifically uses organic ginger because it's rich in microbes. You'll have extra bug; use it to make more grape soda, or try 4 cups fresh unpasteurized apple juice in place of grape.

Recipe information

  • Total Time

    7 days or longer

  • Yield

    Makes 1 quart

Ingredients

4 teaspoons finely grated washed unpeeled organic ginger, divided (grate 1 teaspoon at a time over 4 days)
4 teaspoons sugar, divided
3 pounds red seedless grapes

Special Equipment

A clean 1-liter plastic soda bottle with cap; cheesecloth

Preparation

  1. Step 1

    Stir 1 teaspoon ginger, 1 teaspoon sugar, and 4 cups water in a 32-ounce canning jar to combine. Cover jar with cheesecloth; secure with a canning jar band (without lid). Let sit 1 day out of direct sunlight at room temperature.

    Step 2

    Stir in 1 teaspoon ginger and 1 teaspoon sugar and let sit 1 day. Repeat twice more. Mixture (ginger bug) should have bubbles throughout and release more when agitated.

    Step 3

    After 3 days, purée grapes in a blender until smooth. Strain, pressing on solids (you should have about 4 cups juice).

    Step 4

    Combine juice and 1/2 cup ginger bug in a large nonreactive bowl. Cover with cheesecloth; secure with a large rubber band. Let sit out of direct sunlight at room temperature, skimming white mold from surface, until mixture is slightly foamy and releases bubbles when stirred, 3-4 days. Strain into bottle, cap, and let sit at room temperature until bottle feels pressurized, about 1 day longer. Chill.

    Step 5

    DO AHEAD: Soda can be made 2 weeks ahead. Keep chilled.

Nutrition Per Serving

Per serving: 250 calories
5 g fat
3 g fiber
#### Nutritional analysis provided by Bon Appétit

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