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DIY Ginger Kombucha & Ginger Bug Fermentation at Home: Complete 2025 Guide

Bubbles inside a freshly fermented kombucha bottle

Master the art of homemade kombucha with this foolproof guide to fermenting ginger bug and brewing naturally fizzy ginger kombucha right in your kitchen.

Ingredients

Scale
  • 2 tablespoons grated fresh ginger (for bug)
  • 2 tablespoons sugar (for bug)
  • 2 cups filtered water (for bug)
  • 1 cup ginger bug starter
  • 45 bags of black or green tea
  • 1 cup sugar (for kombucha)
  • 3.5 liters filtered water
  • 1 SCOBY (Symbiotic Culture Of Bacteria and Yeast)
  • Optional: more grated ginger or fruit juice for flavoring

Instructions

  1. Start the ginger bug: Combine grated ginger, sugar, and filtered water in a clean jar. Cover with cloth and secure with rubber band.
  2. Feed the ginger bug daily with 1 tbsp grated ginger and 1 tbsp sugar for 5–7 days, until it’s bubbly.
  3. Boil 500ml of water, steep the tea bags for 15 minutes. Remove tea bags and stir in 1 cup sugar until dissolved.
  4. Add remaining cold filtered water (about 3 liters) to cool it down completely.
  5. Pour sweet tea into a glass jar, add the SCOBY and 1 cup starter liquid (from previous batch or store-bought raw kombucha).
  6. Cover the jar with cloth and secure it. Ferment for 7–10 days at room temperature, out of direct sunlight.
  7. Taste after day 7; when tart and slightly sweet, it’s ready.
  8. Strain and bottle, adding 2–4 tablespoons of ginger bug or juice for flavor and fizz.
  9. Seal bottles tightly and leave for 2–5 days at room temperature to carbonate.
  10. Refrigerate and enjoy chilled!

Notes

Make sure all equipment is clean. Never use metal utensils with SCOBY. Always refrigerate after carbonation to prevent over-fermentation or explosions.

Nutrition

Keywords: kombucha, ginger bug, fermentation, DIY, probiotic, homemade