I’ve been using this IBU balancing spreadsheet http://www.maltosefalcons.com/tech/ibu-calculator-hop-scheduler-analysis for my last few beers as I find it better than a lot of website calculators and it has FWH which a lot of other calcs don’t… I am often scaling 5 gal recipes to 10 or 15 gals…
Does anyone know what IBU formula is being used in there? It seems to give me higher numbers than both Rager and Tinseth, at least as shown on these two sites… http://www.brew365.com/ibu_calculator.php and http://www.rooftopbrew.net/ibu.php. In the end, I guess it doesn’t matter as long as I consistently use one calculator, but I’m just interested.
-red