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Carbon-dioxide - an odorless gas at room temperature. CO2 is a byproduct of fermentation and provides carbonation when forced into solution in a beverage. Dispensing pressure is typically provided by CO2.

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what have i made and is it safe to drink?

I made a DIY CO2 system for my fish tank. I use fermentation for the CO2. 2 and a half weeks ago I filled a 2ltr soda bottle with water, 2 cups of demerara sugar and a tsp of bakers yeast. … This wasnt intended for drinking (no sanitisation first etc) just for producing co2 as cheaply as possible. …
David Burford's user avatar