[Soliton]

Is it safe to bottle the stuff when it’s still fermenting a bit?

That's how they get bubbles in bottles.

[castlebrew]

correction - beer develops carbonation during conditioning (add 1/2 cup corn sugar, boiled in 2 cups water and cooled, to 5 gallons of fermented beer).

Bottling beer that is still fermenting WILL result in exploding beer bottles!