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ollej / brewnit

A website to build and share homebrew recipes
MIT License
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Improve IBU calculation more #40

Open ollej opened 8 years ago

ollej commented 8 years ago

Calculate based on estimated OG/FG if actual values are missing. Take into account IBU_GAL_PER_LB field on fermentables. Add bitterness from "First Wort" and "Mash" hops as well. Weed out boil hops more than X hours to sort out wrongly added dry hops. Calculate IBU from whirlpool/hopstand (50% of boil for a hopstand of 90°C)

Default BS IBU calculations: "-10% on leaf utilization, and a whopping -80% for the mash hop addition"

Druttnezzar has 94 IBU in BS, vs 71 in brygglogg.se 60 vs 41 för "Katt" TurboDIPA: 75 vs 64

Don't show IBU for dry hops in table.

Use +10% for pellets.

Using Garetz as calculation, and +10% for pellets, the IBU seems to be more correct. Using Tinseth in BS adds about 5 IBU.

ollej commented 8 years ago

Pellets/Plug utilization handled. Added IBU for whirlpool (aroma hops). Added IBU for FWH and Mash. Added IBU from bitter extracts. Dry hops won't show IBU.

There's still quite a big difference from BS calculations, unfortunately.