An alpha-acid percentage aged by hopAlphaRemaining.
This is separate from the fraction so the fraction can be tested on its own, while callers get a function that turns 6.4 % into 5.6 %.
An alpha-acid percentage aged by hopAlphaRemaining.
This is separate from the fraction so the fraction can be tested on its own, while callers get a function that turns 6.4 % into 5.6 %.