Can we talk about the 'burp once a day' rule for kombucha?

I was listening to a podcast where a brewer said that advice can cause bottle bombs if your secondary ferment is too active. He mentioned a batch in his Denver basement that went off like a firecracker after 36 hours. How do you judge when it's actually safe to slow down the burping?

4 comments

4 Comments

emeryo581mo ago

That "firecracker" story is a good warning. I've found the ambient temperature of the room is the real key, not the calendar. A warm kitchen can turn a safe bottle into a grenade in a day, while a cool cellar might need a week. I test by feeling how firm the plastic bottle gets compared to a fresh one.

kellyallen12d ago

You lost me at "grenade" @emeryo58 but I'm totally gonna lick my ginger beer bottles now.

fionat551mo ago

Actually, the plastic bottle test can be misleading because different brands use different thicknesses of plastic. A thin bottle will always feel tighter than a thick one, even at the same carbonation level. I go by the calendar and the temperature together, like you said, but I also listen for the hiss when I barely crack the seal.

laurablack1mo ago

Honestly I never paid much attention to room temp before... but your point about the kitchen versus the cellar makes total sense. I'm gonna start checking that way more often now.