So I ran into a problem last night while brewing. I did everything I usually do and let my yeast sit 2-3 hours before pitching- the only thing was that it never swelled up. In a panic, I had an extra yeast in the fridge ( that actually happened to be more inflated than the original) and pitched that yeast as well as the yeast that didn't swell up. Would my beer he ruined? It's about 12 hours after the brew, and there is no activity yet.
Don´t know what beer style are we dealing with, in case of a belgian style pitching a great number of yeast cells would decrease esters production. Your double pitch is Far away from ruining this beer.
You don't say what style beer, or what yeast strain. That aside, as a general rule, most novice brewers tend to under-pitch their yeast, so it's a safe bet all will be o.k. Even if you over-pitched as a result of adding the extra yeast, the consequences for that tend to not be terribly serious, possibly even unnoticeable.
