http://beersmith.com/blog/2016/03/03/adj...quick-tip/
EXCERPT: When brewing high gravity (big) beers, it is important to adjust your brewhouse efficiency down a bit. You simply won’t get the same number of gravity points from a pound or kilogram of malt on a “big” beer....
EXCERPT: When brewing high gravity (big) beers, it is important to adjust your brewhouse efficiency down a bit. You simply won’t get the same number of gravity points from a pound or kilogram of malt on a “big” beer....