I usually brew 23lt batches using BIAB but recently I brewed a small batch which hasn't turned out entirely as planned. Mainly due to poor efficiency, I usually get about 75%, this time only 61%. Is this typical of brewing on smaller scale? The recipe is here https://www.brewersfriend.com/homebrew/recipe/edit/534258 The sugar addition has actually gone into the fermenter after 2 days. I did this to bump up the abv, although maybe I should have researched this option beforehand but I guess it should be ok. I'm quite keen to brew more small scale batches but should I allow for poor efficiency?