Originally Posted by HbgBill
Thanks for the help. I want a bottling volume of 2.5 G. I'm not positive what my boil off will be with this recipe... I've discussed this in the past and it seems mine is very little. So, I'm going to TOTALLY leave the lid off this time and get a continuous good boil going.. per Yooper. So, I'll figure 3/4 G boil off plus some for the grain plus some for the trub. I'll have to work that part out.. but, hope those numbers for ingredients work out.. or do I have to scale them back up a bit for the extra 1/2 gallon..?
This part is all new to me as it is my first AG. I'll be keeping a close watch on the numbers this time so I can start to develop an equipment profile for myself..
Probably the best way to figure it out is to either, do some brews and see or do a 'dry run' with just water. Don't forget you'll lose some volume to shrinkage when cooling, and some gets left behind in the fermenter when racking to keg or bottling bucket.
The nice thing about using software like beersmith is that once you get it dialed in, it tracks boiloff & absorption rates & deadspace in your equipment profile so you only have to do moderate seasonal adjustments for boiloff differences in summer/winter/fall/spring etc.
That recipe above was geared towards 2.5gal into the fermenter If you aren't comfortable that you'll the numbers dead on you could always add a bit more base 2 row which will end up with either A) on target OG is your need to produce more volume B) slightly higher OG if those numbers are on track.
For me 4% ABV is already on the low end, and I don't usually go lower than 4.5% even for a lawnmower beer. I personally have tuned BM's recipe closer to 5.1% ABV. But that's the awesome thing about this hobby, so many different ways to do things and still end up with tasty beer.