Попробовал стаут недельной карбонизации. Всё замечательно, но... пена не белоснежная, а очень тёмная...
Вот рецепт по которому варилось:
Guiness Dry Stout
Dry Stout (13 A)
Type: All Grain
Batch Size: 60,00 l
Boil Size: 66,32 l
Boil Time: 60 min
End of Boil Vol: 60,32 l
Final Bottling Vol: 55,00 l
Fermentation: Ale, Two Stage
Date: 05 Dec 2013
Brewer: G&R
Asst Brewer:
Equipment: 55 l bottling
Efficiency: 75,00 %
Est Mash Efficiency: 81,6 %
Taste Rating: 30,0
Taste Notes:
Ingredients
Amt
Name
Type
#
%/IBU
6,75 kg Pale Malt (Weyermann) (3,3 SRM) Grain 1 56,3 %
2,77 kg Barley, Flaked (1,7 SRM) Grain 2 23,1 %
2,15 kg Roasted Barley (Weyermann) (410,0 SRM) Grain 3 18,0 %
0,32 kg Corn Sugar (Dextrose) (0,0 SRM) Sugar 4 2,7 %
77,77 g Northern Brewer [12,00 %] - Boil 60,0 min Hop 5 38,7 IBUs
0,79 tsp Irish Moss (Boil 10,0 mins) Fining 6 -
1,1 pkg Irish Ale (Wyeast Labs #1084) [124,21 ml] Yeast 7 -
Gravity, Alcohol Content and Color
Est Original Gravity: 1,044 SG
Est Final Gravity: 1,012 SG
Estimated Alcohol by Vol: 4,1 %
Bitterness: 38,7 IBUs
Est Color: 39,1 SRM
Measured Original Gravity: 1,046 SG
Measured Final Gravity: 1,010 SG
Actual Alcohol by Vol: 4,7 %
Calories: 427,1 kcal/l
Mash Profile
Mash Name: Single Infusion, Full Body, Batch Sparge
Sparge Water: 47,58 l
Sparge Temperature: 75,6 C
Adjust Temp for Equipment: FALSE
Total Grain Weight: 11,99 kg
Grain Temperature: 22,2 C
Tun Temperature: 22,2 C
Mash PH: 5,20
Mash Steps
Name
Description
Step Temperature
Step Time
Mash In Add 42,43 l of water at 73,8 C 68,9 C 45 min
Sparge: Batch sparge with 3 steps (Drain mash tun , 26,11l, 26,11l) of 75,6 C water
Mash Notes: Simple single infusion mash for use with most modern well modified grains (about 95% of the time).
Carbonation and Storage
Carbonation Type: Bottle
Pressure/Weight: 323,51 g
Keg/Bottling Temperature: 21,1 C
Fermentation: Ale, Two Stage
Volumes of CO2: 2,3
Carbonation Used: Bottle with 323,51 g Corn Sugar
Age for: 30,00 days
Storage Temperature: 18,3 C