Originally Posted by Yooper
For soda, I use 40 psi and shake until carbed. I love a "carbonator cap" for soda (well, and beer too). I've never had any plastic soda bottles burst at 40 psi.
I don't make cola, but I know there are cola extracts available.
Thanks for the tips! This really helped.
My GF doesn't like beer at all (homebrew, craft, or BMC), so this weekend we made root beer so she could share in my hobby a bit. Turned out quite nicely.
I don't like the "crank 'n shake" method for beer, but for soda it works great. I'm not too worried about over carbing root beer.