So, my stout went into the fermenter last Sunday and the brew went relly well, nailed all the temps and was a very clean day. OG was 1058 and the recipe called for 1059 so I was happy there as well. I set the temp to 18° and left it there until Friday, I bumped it up to 19° and gave it 24 hours at that hoping that it would ferment out a little more but today we are only at 1015 and I think it's done. The recipe called for a FG of 1010 so I'm quite a way off, why would I miss the FG by quite so much? I'm not too worried because the beer tastes great now but if I have something wrong I would like to figure out what. Thanks for help.