This utility lets one estimate a beer's IBUs using a hop's alpha acid percentage, quantity,
and time in which it was added into the boil. The resulting graph shows the IBU contribution
for a single ounce of each variety as a function of boil time as well as the IBU contribution
of each addition.
Define up to eight hops to be used.
Enter the hop schedule for the type, quantity, and boil duration for each addition.
Enter the boil volume and estimated original gravity (OG) of the wort.