This calculator helps you determine the right proportions of tea, sugar, and starter liquid for your kombucha batch. It’s designed for home brewers who want consistent results without guesswork. Use it to scale recipes up or down based on your container size.
Kombucha Brewing Ratio Calculator
Brewing Ingredients
How to Use This Tool
Enter your desired batch size in liters, select your tea and sugar types, and set the starter liquid percentage. Click "Calculate Ratios" to get the precise measurements for your kombucha brew. Use the "Reset" button to clear all fields and start over.
Formula and Logic
The calculator uses standard kombucha brewing ratios: tea at 1-1.5% of batch weight, sugar at 7-8%, and starter liquid at 5-20%. It adjusts for tea type (black, green, oolong, herbal) and sugar type (white, cane, raw) based on common brewing practices. Water volume is calculated as the remaining liquid after accounting for tea, sugar, and starter.
Practical Notes
- For stronger flavor, increase tea ratio slightly; for milder brew, reduce it.
- Starter liquid percentage affects fermentation speed—higher percentages speed up the process.
- Use filtered water for best results; tap water chlorine can inhibit fermentation.
- Scale recipes up or down easily—this tool works for any batch size from 0.5L to 20L.
- Cost consideration: Bulk tea and sugar purchases reduce per-batch costs significantly.
Why This Tool Is Useful
This tool eliminates guesswork in kombucha brewing, ensuring consistent results every time. It helps home brewers save time and reduce waste by providing accurate measurements. Ideal for beginners and experienced brewers alike, it supports daily life management by simplifying a popular DIY beverage.
Frequently Asked Questions
What if my batch size is very small, like 0.5 liters?
The calculator works for small batches; just enter 0.5 and it will compute accurate ratios. Use a kitchen scale for precise tea and sugar measurements.
Can I use honey instead of sugar?
This tool is designed for sugar, but you can substitute honey at a 1:1 ratio by weight. Note that honey may alter fermentation time and flavor profile.
How often should I brew kombucha with these ratios?
Typically, brew every 7-14 days depending on temperature and taste preference. Use this calculator for each new batch to maintain consistency.
Additional Guidance
Always sanitize your equipment to prevent contamination. Store brewed kombucha in glass containers away from direct sunlight. If you notice mold, discard the batch and start fresh with new starter liquid. For more tips, join online kombucha communities or consult local brewing groups.