UPDATE: I just racked this off the yeast today so that I could pitch an imperial stout on the cake. I decided to take a gravity reading and lo and behold, the SG is now 1.015 - right where it should be. It was at 1.020 for about 2 weeks. Good thing I didn't bottle it yet. I will let it sit for at least another week to make sure it is done. Just goes to show that you really are better off to be patient. Cheers!
I made an amber ale based on Ed's pale ale recipe as follows:
8 lbs 2-row
2 lbs vienna
1 lb crystal 120
60 min - .5 oz centennial
25 min - 1 oz cascade
5 min - .5 oz centennial
5 min - 1 oz cascade
0 min - 1 oz cascade
mashed at 152 for 90 min (in an effort to increase fermentability of wort)
60 min boil
OG - 1.057
Efficiency of 86%
Pitched 2L starter of US-05 - chilled and decanted first - (yeast washed from a previous beer). Visible fermentation started after 5 hours. Temp was 70 at pitch and never got higher during fermentation.
SG at one week was 1.020. Brought beer up from my basement to a room that is about 74 degrees and swirled it for several days. After another 2 weeks SG is still 1.020, which is 71% attenuation - just at the low end for US-05.
I don't care too much if this is the FG, as long as fermentation is done. Just curious as to why it is a little higher than expected. Is it just as simple as the pound of crystal 120? TIA
FYI - for what it is worth, the beer smells and tastes good. Going to bottle it sometime this week.