We kegged our first homebrew (a cream ale from Northern Brewer) last Tuesday. When I first tried it after we kegged it, the beer had a slightly off after taste. It didn't taste terrible for our first beer but it definitely didn't taste quite right - kind of inorganic/plasticky.
I tried it last night for the first time in a couple days and it tasted infinitely better. No more weird after taste! I'm pumped. I know that carbonation makes it taste better, but why? If anyone can give me a breakdown of why our taste improved so much I would really appreciate it.
Also, how do you control the carbonation level of beer when kegging? Just lower the pressure?