NunoAraujo
Well-Known Member
Adding crystal malt will help, but I am not sure that it will completely make up the difference. However, S-04 usually does not attenuate as well as Notty, so that will add a little sweetness to the finished brew as well. Between the 2 changes, you overall perceived sweetness will probably be in the ballpark. If you are worried that the perceived sweetness will be too low, you can also decrease the hops by 10% or so. Either way, it should still be a solid stout, just not quite exactly the same as the original recipe.
Thanks!