A thread where hop utilization came up reminded me of a beer that I had this happen.
I'd been brewing all grain for a while, and my girlfriend wanted to learn to brew (and be able to do all the work herself) so we started with extract. Her second beer was an Irish Red kit, and seeing how I had the equipment to move from stovetop to full volume on propane we opted for that. Of course, the recipe didn't have a full volume version, it was a suggestion I made on the fly. What I forgot about was that the decrease in gravity (more diluted at full volume) meant an increase in hop utilization. What should have been an Irish Red felt closer to a Red IPA, but with a little too much malt backbone behind it.