Originally Posted by Craigweiser
Awesome! That explains it. Any idea how best I can bleed out the extra co2 still in solution? Probably best to bring up the temp to room air and turn off the co2 and bleed off every so often until it's at the right carbonation?
Even if it's not overcarbed, CO2 can give it an acidic bitterness early on. It usually fades out after a few days in my experience.
If it is overcarbed, just disconnect the CO2 and purge some or all of the headspace. After a few hours, CO2 will come out of solution and equalize headspace pressure again. Sample it and see if it's where you want it. If it's still too high, purge again and repeat. Once you like, reconnect the gas at a lower serving pressure. I wouldn't worry about bringing the temp up for this.