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From BrewWiki
An '''Alpha Acid Unit''' (AAU), also called '''Homebrew Bitterness Units (HBU) ''' is a measure of hops used - typically for a 5 gallon batch. It can be calculated simply by multiplying the percent alpha acid of the [[hops]] used by the number of ounces of hops. For example 3 ounces of 5% alpha hops would be equivalent to 15 AAUs.
:'''AAUs = (hops_alpha_percent * hops_weight_oz)'''
* [[Technical]]
* [[Hops]]
==External Links==
* [http://www.beersmith.com/blog/2008/04/20/calculating-hop-bitterness-how-much-hops-to-use/ Calculating Hop Bitterness - How Much Hops to Use]
[[Category:Glossary]]
[[Category:Technical]]
[[fr:HBU]]
