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🍵 Kombucha Brew Guide

Calculate ingredients for any batch size, plan your fermentation timeline, and explore flavouring ideas for first and second ferment.

2F Flavouring Ideas

🫚 Ginger + Lemon

Classic combo. 1 tsp grated ginger + 1 tbsp lemon juice per 500ml. High carbonation. Refreshing.

🍓 Strawberry + Basil

2–3 sliced strawberries + 2 basil leaves per 500ml. Fruity and aromatic. Moderate fizz.

🫐 Blueberry + Lavender

Handful of blueberries + ¼ tsp dried lavender per 500ml. Gorgeous colour. Floral and fruity.

🍍 Pineapple + Coconut

3–4 pineapple chunks per 500ml. High sugar = very fizzy. Watch pressure carefully.

🍎 Apple + Cinnamon

50ml apple juice + ¼ cinnamon stick per 500ml. Warm spiced flavour. Good for autumn/winter.

🌹 Rose + Raspberry

1 tsp rose water + 4–5 raspberries per 500ml. Elegant, floral, slightly tart. Low sugar = less fizz.

🍋 Turmeric + Black Pepper

¼ tsp turmeric + pinch of black pepper per 500ml. Earthy, health-focused. Pepper boosts bioavailability.

🍑 Peach + Vanilla

3–4 peach slices + ¼ vanilla bean per 500ml. Sweet and mellow. Great for beginners.

🫧 SCOBY health check: A healthy SCOBY is cream/tan/brown, rubbery, and floats. Black spots = mould (discard everything). Stringy brown threads hanging below = yeast strands (normal). Thin baby SCOBY forming on top each brew is a good sign.
🌡️ Temperature matters: Fermentation slows significantly below 18°C. Above 30°C risks off-flavours and kahm yeast. The ideal range is 22–26°C. Avoid temperature fluctuations — a steady environment produces more consistent results.
Second ferment safety: Bottle in swing-top or screw-cap bottles designed for pressure. Check carbonation daily by squeezing plastic bottles or carefully "burping" glass. Over-carbonation can cause explosive opening — refrigerate to stop fermentation when fizz is right.