how do i know what the ABV is of my home brew
Buy a hyrdometer, take before and after readings. Calculate.
what calcukations please ? sorry if i seem stupid
I just use beersmith to do it for me, or you can do it long hand, or enter it in here: Hydrometer Correction
The whole book rocks. Buy it. Read it.
how much does it vary or is there a rough average and how can i make it stronger if it is a variable
(Og-Fg )*129= Abv
question, why do different references use different numbers to multiply by?
take the differance between the two readings multiply by 1.1 then by 1.5 you will then have your content
so when i bottle i take a hydrometer readinfg then one when ready and do the math! can i make it stronger or do i just have to see how it truns out ?