About a week after I brewed my first beer I decided I would get another one in the queue so I would have one more to taste when they became ready. I decided to try my hand at a milk stout, another type of beer I thoroughly enjoy. I spent some time looking at other milk stout recipes and ultimately crafted something in BeerSmith2 that I thought would taste pretty good (based on a theoretical imagination in my head of what each of these base malts taste like). Unfortunately I missed my FG on this one by a huge amount (like 15 pts). I finally tracked it down to an improper estimate of mash efficiency ...