I added 1 lb of Lactose to a 5 gallon batch of Porter. I'd read that this would account for up to 0.007 of additional gravity.
When calculating the true ABV, should I subtract 0.007 from the actual hydrometer reading?
For example, if my OG hydrometer reading was 1.067 and my FG is 1.029 would by true ABV be...
5.1% to represent 1.067 (OG) and 1.029 (FG)
or
6.0% to represent 1.067 (OG) and 1.022 (FG) [1.029 - 0.007 lactose corrected]?
When calculating the true ABV, should I subtract 0.007 from the actual hydrometer reading?
For example, if my OG hydrometer reading was 1.067 and my FG is 1.029 would by true ABV be...
5.1% to represent 1.067 (OG) and 1.029 (FG)
or
6.0% to represent 1.067 (OG) and 1.022 (FG) [1.029 - 0.007 lactose corrected]?