What is an IBU? It’s a simple question — wait until you hear the answer.
Written by John Palmer
Issue: March-April 2008
IBU calculators most often used by brewers were developed prior to the popularity of adding massive hop additions after the boil. As brewing techniques evolve, the way we measure IBUs should too. A new model, dubbed SMPH, accounts for factors that have previously been overlooked, including separating isomerized alpha acids from auxiliary bittering compounds.
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