I just brewed an Russian Imperial Stout that I had converted to partial mash from an all grain recipe using Beersmith2. The style is kinda big, and I kept tweaking it until Beersmith estimated my OG to be 1.087. I was very surprised after I got it in the carboy and topped off the water to 5 gallons, to get an OG of 1.119! And indeed, the wort was syrupy in consistency. Why was Beersmith so off on this one? I’m not really sure my yeast can keep going on a beer this big. I am considering splitting it into two carboys and adding more water, but I don’t want to mess with it after fermentation has started. Should I just let it ferment through? Is this beer going to be disgusting?
If anyone wants to check the recipe and tell me what I did wrong, I shared it here: http://beersmithrecipes.com/viewrecipe/ … l-mash-alt