I recommend for High-gravity a (Double Mash) method for Braumeister 20l, efficiency 70 % for that
. First Mash:
Half of the grains without 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 Carafa I in the last 40 minutes.4l sparge warter.
Aerate the wort at 20C. with 12ppm pure oxygen 12hr late add more 12ppm of pure oxygen again. Yeast: American ale II
Fermentation at 20 c.
.Cold crash "90 days or more" at 2c˚
“Full body with a strong hop character throughout. The late hops are bright and citrusy. Complex bread and caramel base with a moderate fruitiness. Clean fermentation with a strong alcohol punch, this needs some age to let the alcohol and hops come back into balance.”
Excerpt From: Strong, Gordon. “Modern Homebrew Recipes: Exploring Styles and Contemporary Techniques.” iBooks.