I just finished brewing a 5 gallon extract batch and I think I may have used too much black malt 500 L (aka black patent). I somehow thought black malt was similar to roasted barley and now realize that they aren't interchangeable. I used 12 oz. of black malt, 4 oz. of english crystal 55 L, 6 lbs. light LME, 8 oz. lactose, 6 oz. molasses, and 1 oz. fuggles for boiling. Any thoughts on this?
Just read a couple threads on black malts and it looks like 10% is the maximum you want to use for the grain bill. I might be close to the 10% or I may have made the blackest harshest tasting beer in Sacramento.
Did some calculations and it appears that the black malt makes up a little over 11% of the grain bill (1 lbs. LME equals 1.25 lbs. 2 row grain).
I think I may be in the clear with this one.