So I recently started developing my own extract/partial mash recipes with the use of BeerSmith and brewed my first, a Hefeweizen, yesterday. The recipe was as follows:
5 lbs. Wheat LME
1.6 lbs. 2 Row Pils
0.25 lbs. Crystal 20
1 oz Hallertauer
Beersmith showed that all my measurements were in the clear for the style and I was pretty happy with how it was shaping up, so I went and brewed it. Now, I wasn't too sure as to how to input my efficiency in Beersmith considering 73% of my brew was 100% efficient so I looked around and figured I could get away with 65% considering I sparge my grains pretty well.
This recipe was supposed to yield an OG of 1.45 at that efficiency in a 5 gallon partial match brew. Unfortunately what I ended up with was more like 1.36. Is this a question of the wrong efficiency or did I do something else seriously wrong? The boil was 3 gallons and I lost maybe .2 gallons of it by the end of the boil.