DaveMcPhee
Well-Known Member
Recently brewed a 5G recipe using a 2.5G boil volume. On finishing, I realised I didn't have the fermenter available that I thought I had. all I had available was a 5G plastic bottle.
So, I decided to throw in my 2.5G of wort, and add water until reaching 4G, leaving 1G worth of head space.
My OG was 1.067.
I'm going to estimate my FG will be 1.015 (stay with me here). ABV roughly 6.85%
question: Once fermentation is complete, and I add an extra gallon of water to bring the total volume up to 5G, what will my FG and ABV be? Can you show me the maths required to figure this out?
So, I decided to throw in my 2.5G of wort, and add water until reaching 4G, leaving 1G worth of head space.
My OG was 1.067.
I'm going to estimate my FG will be 1.015 (stay with me here). ABV roughly 6.85%
question: Once fermentation is complete, and I add an extra gallon of water to bring the total volume up to 5G, what will my FG and ABV be? Can you show me the maths required to figure this out?