Hi all. I'm planning my first All grain BIAB. I've done several partial mashes but I'm going all out this time. I'm brewing a Barney Flats Oatmeal Stout Clone. I have to do 2 to 2.5 gallon batches due to lack of space at home. From all that I've read, One should add about a 1/2 pound of extra grain to account for efficiency loss in BIAB, Do you guys find this necessary?
My question is that I'm trying to brew to style which means my ABV should be around 5.5 to 5.9 for this beer but with the extra half pund of base malt, Qbrew says I'm close to 7 ABV.
SHould I just go with it and see what my post boil gravity is and if I want to stay in style, add water to bring down the ABV, or is a 1/2 to 1 percent ABV not enough to worry about if I do indeed get an amazing efficiency and go over 5.9 ABV?
I think I'm splitting hairs here, but I guess it's all about the learning process and finding my groove.
Thanks for any suggestions.