This article discusses a specific variety of hops. For general information about selecting, using or propogating hops, see the main hop page The term "noble" is used to describe hops that share a particular set of characteristics. Unfortunately, nobody agrees on which characteristics these are, and therefore there is very little agreement on which hops qualify as "noble."
It is generally agreed that to be noble, a hop must have a relatively low total alpha acid content (usually around 2-6 %), and a mild, pleasant aroma. Other characteristics usually cited include:
- low beta acid
- alpha acid to beta acid levels close to 1:1
- high humulene levels
- low myrcene levels
- poor storage characteristics
Since the growing area affects the character of the hops, even varieties which are considered "noble" in one area generally are not thought to have noble character when grown elsewhere.
Only two varieties of hop are universally considered to be noble:
- Tettnang Tettnanger
- Czech Saaz
And two additional varieties are often, but not always, included in the definition:
- Hallertauer Mittelfrueh
- Spalt Spalter
However, depending on the brewer and the definition used, the following hops may also be considered noble:
- U.S. Liberty
- Hallertau Hallertauer
- Tettnang Tettnanger
- Hersbruck Hersbrucker
- Spalt Spalter
- East Kent Golding
- U.K. Fuggle
- Styrian Golding