For those not familiar, this post relates to this thread and the ensuing polls... http://beeradvocate.com/community/threads/the-averagely-perfect-american-ipa-project.59552/ While the polls wind down with the dry hop questions, I went ahead and started crunching some remaining numbers. Here's a draft of the All Grain version: (This is not a request for recipe critique per se, which would be silly at this point. But if I have made an error somewhere, of course I will fix it.) Draft Recipe sans Dry Hops (TBD)... Targets: 5 Gallons into Fermenter Target ABV: 6.5% Target OG: 1.062 Target FG: 1.012 Mash Efficiency: 70% Apparent Attenuation: 81% Recommended Mash Temp: 151F 64 IBUs (per Tinseth Calc) Grain Bill: Two-Row Brewer's Malt - 11.78 lbs Crystal 40 - 0.64 lbs Carapils - 0.38 lbs Hop Schedule: 60 Minutes --Magnum, 14% AA, 0.11 oz 15 Minutes --Simcoe, 13% AA, 0.5 oz --Centennial, 11.5% AA, 0.5 oz --Cascade, 5.9% AA, 0.5 oz 10 Minutes --Simcoe, 13% AA, 0.5 oz --Centennial, 11.5% AA, 0.5 oz --Cascade, 5.9% AA, 0.5 oz 5 Minutes --Simcoe, 13% AA, 0.75 oz --Centennial, 11.5% AA, 0.5 oz --Cascade, 5.9% AA, 0.5 oz Flameout/Whirlpool/Hopstand --Simcoe, 13% AA, 1.0 oz --Centennial, 11.5% AA, 0.75 oz --Cascade, 5.9% AA, 0.75 oz Dry Hop --TBD Yeast: Wyeast 1056/WLP001/US-05 Notes: - This recipe is for 5 gallons of wort going into the fermenter. With such a massive hopload, absorption matters, and it affects a lot of things. Read on. - This recipe assumes pellet hops, with a 10% bonus utilization due to pellet form, and a wort absorption of 3.2 ounces wort per ounce of hops. The Standard Tinseth formula assumes leaf hops (without the 10% bonus utilization.) If you will use pellets, but don't believe in the pellet bonus (or believe in a different bonus), adjust. YMMV. The reason this recipe was built with pellet hops is that I am assuming they will be more available to most people. - If you use Whole Leaf hops, this may change your utilization assumptions and your hop wort absorption assumptions. YMMV. Adjust as necessary. - I used my own boil off rate (in conjunction with hop wort absorption) to determine a starting wort volume, which impacts hop utilization. YMMV. Adjust as necessary. Use your software. You paid for it. If it's freeware, good luck! - Anything you change that relates to absorption will change the total fermentables you need to get out of your mash. So you may need to adjust the grain bill up/down. - If your hops have different Alpha Acid percentages, adjust as necessary. - This recipe assumes 70% Mash Efficiency, a little higher than BYO recipes (for example) assume, but probably closer to the average efficiency on this forum based on what I've seen over the years. YMMV. Adjust as necessary. - I need a beer. YMMV. Adjust as necessary.