VonScott said:
I have put down three extract brews that have been bittered with Galaxy, all three where 20g at 40 mins in 10 litre boils. Late hopping was a combination of Galaxy and Cascade or just Galaxy. The results were OK, not overly sweet but certainly hop (aroma and taste) and malt dominated these brews. Anyway I decided, even though Galaxy is one of my favourite hops, that I will be using Magnum and Challenger for all future bittering additions.
Some hops bitter better than other, and some hops are better at aroma & flavour. POR is a great bittering hop, but not good for flav & aroma. The reason is "noble" hops make for better flav & aroma due to some of the following
Lower alpha acid content - less than 6%
Low myrcene oil content - less than 50% of total oils
Low cohumulone alpha acid content
Alpha acid:Beta acid ratio close to 1:1
Medium oil content - 0.5 - 1.5%
Some have a high humulene:caryophyllene ratio with values above 3:1 generally required for noble types.
A few examples of %
Hop. WOC 'Myrc Humul Caryoph Farne Other
Saaz .55 22.5, 42.5, 11.0, 13, 10
Tettnan .60 40.5 , 20.5, 6.5, 6.5, 25
Cascade 1.15 52.0, 13.0, 4.5, 6.0, 23
Fuggle 0.95 45.0, 23.0, 8.0, 4.5, 19
EKG 0.8 23.0, 45.0, 14.0, 0.5, 17
POR 1.5 37.5, 5.5, 7.5, 0.5, 48
WOC = whole oil content
Myrc = Myrcene
Humul = Humulene
Caryoph = Caryophyllene
Farn = Farnesene
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