My first craft I poured down the drain was a couple weeks ago - Boulevard Lunar Ale -- Tasted acidic, both of them! - I felt bad for a few days pouring two beers down the drain, but the taste that lingered in my mouth/head for 2 days reminded me why...
Interesting. I had the same experience. Then...3 days later it was about 5 degrees and I decided to give it a go again along with some rotisserie roast beef and grilled potatoes. It was nice.
I don't know if it was the cold weather, if my taste buds evolved in 3 days or the rich meat and potatoes meal blunted the taste buds.
Either way...I'd never buy a 6/12 pack.