compounds, another dose of hops is
sometimes added to the brew after the boiling,
specifically to add aroma. The aroma of
ordinary hops is characterized by the terpene
myrcene, which is also found in bay leaf and
verbena, and is woody and resinous. “Noble”
hop varieties are dominated by humulene,
which is more delicate, and often contain pine
and citrus notes from other terpenes (pinene,
limonene, citral). The American variety
“Cascades” has a distinctive floweriness (due
to linalool and geraniol).
Brewing Beer
The brewing of beer takes place in several
stages.
Mashing: ground barley malt is soaked in
hot water. This revives the barley
enzymes, which break starch into sugar
chains and sugars, and protein into amino