𝘍𝘰𝘳𝘵𝘺𝘛𝘸𝘰@ned @ThatCrazyDude if you don't have an airlock, you can use a balloon.
Stretch it over the neck of the bottle and stick a hole through it with a needle or thumbtack.
As the CO2 accumulates, it'll inflate the balloon and escape through the small holes.
When the balloon finally deflates, it's done. Take about a week with small batches.
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