I do 2 gallon recipes, and built my own temp controller. I recently came into possession of a Brewbysmith STC2000+, and a mini fridge. For my first lager, I want a simple recipe with a simple temp profile. Does such a thing exist? I did 1 lager last year, fermented 4 weeks at around 40deg. The beer was OK, but weak carb. I read that adding extra yeast to the bottle increases carb, but no indication of how much!