What are IBU’s?

Basically, International Bitterness Units (IBU) are a measure of a beer’s bitterness.  Here is a definition from wikipedia:

The International Bittering Units scale, or simply IBU scale, provides a measure of the bitterness of beer, which is provided by the hops used during brewing. Bittering units are measured through the use of a spectrophotometer and solvent extraction.


Some commercial beers have the IBU measurement printed right on the bottle.  However, most home brewers don’t have a spectrophotometer as part of their personal beer brewing equipment.




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