I brewed my first all grain today, and everything went well, except I got really poor efficiency. It worked out to around 63%, so I'm a bit stumped as to what went wrong.
Here's my recipe:
5.9 lbs Wheat Malt, Bel (2.0 SRM)
2.1 lbs Pilsner (2 Row) UK (1.0 SRM)
1.5 lbs Honey Malt (25.0 SRM)
1.5 lbs Clover Honey (flame out)
1.0 oz Cascade (60 mins)
0.5 oz Cascade (10 mins)
0.5 oz Cascade (0 mins)
Estimated OG was 1.061, but I only managed 1.052
I did a BIAB with 5 gallons at 150 F for an hour. Since I was using my stove top, I kept the burner on the lowest setting, and that kept the temp rock solid.
After an hour, I pulled the bag, and squeezed it as best I could, but I'm sure there was a bit more to give. I also did a dunk sparge, and that came out much lighter in color.
Then I boiled for 60 mins, and chilled using an ice bath, and ice bags (sterilized ice in a sterilized ziplock).
I'm used to not hitting my OG due to the need to add top-off water in an extract brew, but I'm pretty sure that all-grain is different.
Anyone have any ideas as to why I would get such a low OG?