bionut
Well-Known Member
I am a BIAB brewer and i want to brew an Imperial Stout. Until now i always mashed all the grains (for imperial stouts that is) in as much water as i could and i would sparge the grain bag to get the right preboil volume. It worked good enough, but the efficiency was low. So now i want to brew another Imperial Stout but with the double mashing technique.
Having in mind that i use 100% Reverse Osmosis water and bru'n'water for my mineral additions, how should i divide the grain bill and calculate the minerals addition for reaching the target water profile and mash pH?
This is the recipe, i may change some things or leave it as it is... don't know yet:
8.00 kg Pale Malt (2 Row) Bel (5.9 EBC) Grain 5 59.9 % 5.22 L
2.00 kg Oats, Flaked (2.0 EBC) Grain 6 15.0 % 1.30 L
1.00 kg Cara-Pils/Dextrine (3.9 EBC) Grain 7 7.5 % 0.65 L
0.50 kg Brown Malt (128.1 EBC) Grain 8 3.7 % 0.33 L
0.50 kg Caramunich Malt (110.3 EBC) Grain 9 3.7 % 0.33 L
0.50 kg Carared (39.4 EBC) Grain 10 3.7 % 0.33 L
0.30 kg Caraaroma (256.1 EBC) Grain 11 2.2 % 0.20 L
0.20 kg Chocolate Malt (886.5 EBC) Grain 12 1.5 % 0.13 L
0.20 kg Roasted Barley (591.0 EBC) Grain 13 1.5 % 0.13 L
0.15 kg Black (Patent) Malt (985.0 EBC) Grain 14 1.1 % 0.10 L
35.00 g Centennial [10.00 %] - Boil 60.0 min Hop 15 27.5 IBUs -
35.00 g Centennial [10.00 %] - Boil 30.0 min Hop 16 23.5 IBUs -
1.0 pkg English Ale (White Labs #WLP002) [35.49 ml] Yeast 17 - -
Having in mind that i use 100% Reverse Osmosis water and bru'n'water for my mineral additions, how should i divide the grain bill and calculate the minerals addition for reaching the target water profile and mash pH?
This is the recipe, i may change some things or leave it as it is... don't know yet:
8.00 kg Pale Malt (2 Row) Bel (5.9 EBC) Grain 5 59.9 % 5.22 L
2.00 kg Oats, Flaked (2.0 EBC) Grain 6 15.0 % 1.30 L
1.00 kg Cara-Pils/Dextrine (3.9 EBC) Grain 7 7.5 % 0.65 L
0.50 kg Brown Malt (128.1 EBC) Grain 8 3.7 % 0.33 L
0.50 kg Caramunich Malt (110.3 EBC) Grain 9 3.7 % 0.33 L
0.50 kg Carared (39.4 EBC) Grain 10 3.7 % 0.33 L
0.30 kg Caraaroma (256.1 EBC) Grain 11 2.2 % 0.20 L
0.20 kg Chocolate Malt (886.5 EBC) Grain 12 1.5 % 0.13 L
0.20 kg Roasted Barley (591.0 EBC) Grain 13 1.5 % 0.13 L
0.15 kg Black (Patent) Malt (985.0 EBC) Grain 14 1.1 % 0.10 L
35.00 g Centennial [10.00 %] - Boil 60.0 min Hop 15 27.5 IBUs -
35.00 g Centennial [10.00 %] - Boil 30.0 min Hop 16 23.5 IBUs -
1.0 pkg English Ale (White Labs #WLP002) [35.49 ml] Yeast 17 - -