Opal → Styrian Golding
last-resort matchUse 1.9× the weight for the same bitterness
alpha acids 9.5% → 5% · 17% aroma match
- Keeps
- Spicy
- Loses
- Black currant, Citrus, Floral, Herbal, Anise
- Adds
- Earthy, Resin, Sweet, Noble
Proven alternatives to Opal and hops with a similar aroma profile. Pick by availability, price or country of origin.
Bitterness scales with alpha acid times weight, so for bittering additions rescale the weight by the alpha ratio — the multiplier for each substitute is given below. For late, whirlpool and dry-hop additions dose 1:1 by weight and go by aroma instead, because alpha acids do not drive those.
Use 1.9× the weight for the same bitterness
alpha acids 9.5% → 5% · 17% aroma match
Use 2.29× the weight for the same bitterness
alpha acids 9.5% → 4.15% · 50% aroma match
Aramis
Aurum
Bohemie
Columbus
Look for similar alpha acid content (within 2%) and overlapping aroma notes. The more shared notes, the safer the swap.