Originally Posted by JLem
3 weeks is the minimum time to properly car and condition bottles. Bigger beers - like Imperial IPAs - often take longer. Up to 6 weeks or more.
I am on the cusp of bottling my IIPA. Or so I hope it turns out, I might have to buy a single bottle to see if what I made is anything close to what I was aiming at. Maybe I shouldn't aim for a target that I don't know what it is. OK, I'm done rambling...
What you're describing sounds almost word for word what I've experienced the first impatient bottle of every batch I've made so far. Just giving it more time has always been the cure. I'd expect the IIPA to be exactly as JLem has said and take longer.
It is possible that you overdid it and your yeast alcohol poisoned themselves. My OG was 1.080 FG 1.014 ~ 10% ABV. If it had of dropped to 1.005 it would hit 11.5% and my yeast would have killed themselves off. Fortunately my numbers and attenuation was spot on to what I expected. I don't think there's a great deal of ABV created in the bottle, but each yeast is different in their tolerance levels.