I cracked a bottle just now for St. Pats day. Mixed bag results. On one hand, I'm a little disappointed that it's not quite like BCBS, but on the other, very satisfied that it's a pretty solid RIS. It tastes a bit more like an Imperial version of Founder's Breakfast stout than it does BCBS - I love me some Breakfast stout, so that's not a bad thing.
- The mash temp needs to be higher than what I mashed at. I got a little gun shy by hearing that high mash temps produce more complex sugars that are harder for yeast to break down and got fixated on attenuation problems. I mashed lower and as a result, it dropped my FG significantly. Part of BCBS's charm is the sweetness. That sweetness is critical for balancing the amount of coffee the recipe requires. Those more complex sugars that result from mashing at a high temp are needed to keep the FG up to where it should be and will result in a sweeter final product. Adjustment: mash @ 160F for 90 min
- Not enough Bourbon flavor. Adjustment: 6-7 ounces of light oak chips soaked in Makers for 3 weeks or more. This is a big bastard recipe - it can handle it and probably more.
I'm going to start with those two and leave the grain bill intact for now. Those two adjustments should have a big effect alone. I'm going to probably do a 2.5 gal batch this time in the next few weeks. It's only been in the bottles a little over a month and it already has shown improvement from conditioning. Can't wait to see how it is a year from now.