I recommend for High-gravity a Double Mash method for Braumeister 20l, efficiency 65 % for that
. First Mash:
Half of the grains whitout black malt in the pipe, make
the Sparge to reach 25 L for that 4l sparge warter.
. Second Mash:
Other half of the grains in the pipe with black malt in the last 40 minutes will prevent the extraction of hash tannins in your beer
Aerate the wort with pure oxygen or filtered air and pitch 2 American ale II
.First fermentation at 17 to 20 c˚ 15 days
.Secondary fermentation 10 days at 20 c˚ "Optional 30g Coconuts Nibs in the hopbag"
.Cold crash "15 days" at 0c˚