A little bit of everything Flashcards
(947 cards)
What does European oak (Quercus robur) contribute to whisky?
Fragrance, astringency, and resinous characteristics.
Name one component in oak that contributes to whisky flavor and what it does.
Lignin – adds complexity and vanilla-like notes.
Why is toasting a cask important?
It breaks down wood components to release desirable flavors like caramel and vanilla.
What is the function of charring inside a cask?
Acts as a purifier, removing sulfur compounds.
What is a rejuvenated cask?
A spent cask that has been re-charred to reactivate the wood.
What’s the difference between ASBs and dump hogsheads?
ASBs are whole bourbon barrels (180–200L); dump hogsheads are reassembled in Scotland (250L).
What are traditional bonded warehouses called?
Dunnage warehouses.
How does a dunnage warehouse affect whisky maturation?
Promotes mellowing; high humidity causes lower strength loss but higher volume retention.
What is a racked warehouse?
A modern, tall warehouse where casks are stacked up to 12 high.
What is “The Angel’s Share�
The 2% annual loss of whisky due to evaporation.
How does location affect whisky maturation?
Coastal sites can impart salty characteristics; inland sites have greater temperature variations.
What are the three “mechanisms†of maturation?
Additive (flavor gain), subtractive (removal of off-notes), and interactive (oxidation).
Which compound in oak adds sweetness and color?
Hemicellulose (when caramelized).
What effect do tannins have on whisky?
They add astringency and delicacy.
What are wood extractives?
Residues like bourbon or sherry that leach into the spirit.
What does oxidation during maturation do?
Reduces harshness and adds complexity.
What enzyme converts starch into maltose during mashing?
Amylase.
What is the spirit safe used for?
To monitor and control the spirit during distillation; it’s locked and only accessible to customs officers.
What’s the role of the lyne arm in a pot still?
It influences reflux—angle affects how heavy or light the resulting spirit will be.
How is copper beneficial in whisky distillation?
It removes sulfur compounds and encourages desirable esters.
Why are pot stills always used in pairs or triples?
To allow for double (or triple) distillation, separating alcohol more effectively.
What is copper fatigue?
Degradation of copper due to repeated heating and cleaning; affects flavor over time.
What does reflux mean in the context of distilling?
When rising vapors condense and fall back into the still, refining the spirit.
What does worm tub condenser do?
Cools the spirit vapors in a traditional coiled pipe submerged in water.