[beebeepka]

Is your brew carbonated? The stuff at the grocery store says it's naturally carbonated but I have no idea how it all works

[PeterisP]

Kombucha includes also yeast which metabolizes sugars and releases CO2 so it has some natural carbonation like e.g. beer does.

[ncmncm]

I have a times added 1/2 tsp of dextrose ("corn sugar") before I tighten down the bottle lid, to boost fizz. (Beer brewing trick.)