I am planning to follow a recipe (5 gallon) I found to make an imperial stout with OG approximately 1.110 to result in about 11% ABV. The recipe looks like it's trying to clone Rogue imperial stout or Avery Czar, both of which I love. Ohterwise, I probably wouldn't shoot for such a high gravity brew. My mash/lauter tun will only accomodate about 15 lbs. of grain and my brew kettle is only 8 gallons. The grainbill for this recipe (including all specialty grains) is 38.5 lbs. Only 26 lbs. of this is base malt. How would I go about doing this with my equip? Would I essentially do 2 or 3 mashes, yielding about 15 gallons of wort, and then just boil the living crap out of it a third at a time until I'm left with 5.5 gallons or so? Or am I just completely off track with this idea? Any help with high gravity brewing would be great. I've never done anything with an OG higher than about 1.060. I do however want to use AG as opposed to a partial mash regardless of the amount of time/effort involved.