BrewWorm
Active Member
I'm set on doing hand calculations for my grain bills (and hops for that matter) so I can really understand what's going on in my mash tun. When I get good consistent brews, then I'll switch to the software.
For now, I'm trying to get a firm handle on extraction percentages and brewhouse efficiency. Basically do you factor in the extraction percent into the overall brewhouse efficiency?
As I understand it now:
Extraction %: How much extract you can get from a unit of malt. This will vary from malt to malt, but is usually in the ~75 - 80% range, correct?
Brewhouse efficiency: How much of the sugars you can actually extract from the grain. Does this include the extraction % or is more just about how much extract you can lauter and separate from the grain bed?
So for grain calc say that I want to hit 13 Plato in a 15gallon batch.
15gallons = 125lbs of H20
125 * .13 = 16.25 lbs of extract
Would it be 16.25/(brewhouse eff) or 16.25/(brew eff * extraction %)?
I'm guessing the latter so if I had a 80% efficiency and 2row I would get
16.25/(0.8 *0.8) = 25lbs of grain.
Am I thinking about this correctly?
For now, I'm trying to get a firm handle on extraction percentages and brewhouse efficiency. Basically do you factor in the extraction percent into the overall brewhouse efficiency?
As I understand it now:
Extraction %: How much extract you can get from a unit of malt. This will vary from malt to malt, but is usually in the ~75 - 80% range, correct?
Brewhouse efficiency: How much of the sugars you can actually extract from the grain. Does this include the extraction % or is more just about how much extract you can lauter and separate from the grain bed?
So for grain calc say that I want to hit 13 Plato in a 15gallon batch.
15gallons = 125lbs of H20
125 * .13 = 16.25 lbs of extract
Would it be 16.25/(brewhouse eff) or 16.25/(brew eff * extraction %)?
I'm guessing the latter so if I had a 80% efficiency and 2row I would get
16.25/(0.8 *0.8) = 25lbs of grain.
Am I thinking about this correctly?