I'm fiddling around with my own take on the IBA/CDA category. This is what I brewed last time:
7 lb American 2-row
5 lb Munich 10L Malt
1 lb Carared
1 lb Oat Flakes
8 oz C 120°L
4 oz Pale Chocolate 200L
0.75 oz Warrior (16.0%) - 60 min
0.5 oz Centennial (10.0%) - 20 min
0.5 oz Simcoe (12.7%) - 20 min
0.25 oz Centennial (10.0%) - 5 min
0.25 oz Simcoe (12.7%) - 5 min
0.5 oz Amarillo (11.2%) - dry
0.5 oz Citra (11.1%) - dry
It worked pretty well, I think. Kind of a beefy american brown ale or riff on the CDA style (but more malty than as I understand the dark-IPA style). I mashed at 152F, hit 1.070 OG, 1.014 FG, and used Pacman yeast. This time around, I'm using 1056 (I'm getting really poor bottle-conditioning with a lot of my Pacman batches) instead. I'd also like to shift the recipe around. I'd love some feedback.
Here are some specific things I'm thinking about:
1) Change the oatmeal. I put that in there because Drakes Expedition Ale has oatmeal (or so they claim). I like it in oatmeal stouts a lot, but I think maybe just shifting to either wheat malt or a bit of carapils would be better. Unsure about this, but I'm mostly putting it in here for body and mouthfeel.
2) Swap the pale chocolate for a darker chocolate malt or a mix of chocolate and roast barley. I like the general taste of the beer, but I feel like it could use a little more roastiness.
3) Definitely change the carared for traditional C40, since I have about thirty pounds of C40 in my garage. Probably reduce the amount added to 12 ounces, since I'm not using pacman anymore (which seems to attenuate better, especially in crystal-heavy recipes).
4) Probably change the hopping schedule to include a 30 minute whirlpool / hopstand with the 5 minute additions. Just recently started doing that, and I like how it works with the late hop additions. Also worth noting that I actually brew on an 18 gallon batch size, but I figured the recipe would be more approachable at this size. So a half-hour whirlpool only drops my wort to about 175F or thereabouts.
5) Might bump down the warrior a tad and bump up the 20-minute additions on balance. More flavor, same bittering. I am worried though about the array of hops used here. That's a lot of different stuff. The beer doesn't taste muddled as-is, but I'm worried that if I mess with it, it will start tasting muddled and kitchen-sinky.
Overall, my goal is to take this beer and push it ever-so-slightly in a more toast-with-marmalade direction. A bit more citrus hops, a bit more roast from the malt.