CBP Aging & Maturation Flashcards

What type of barrel must be used for bourbon maturation according to US federal regulations?

Answer: New charred oak containers

US federal law mandates that bourbon must be aged in new, charred oak containers.

What is the primary chemical reaction that gives bourbon its amber color during aging?

Answer: Extraction of lignin-derived compounds and tannins from the charred wood

Bourbon's amber color comes mainly from lignin-derived compounds and tannins extracted from the charred oak staves.

What term describes the portion of bourbon lost to evaporation through the barrel during aging?

Answer: The angel's share

The 'angel's share' is the industry term for the volume of spirit that evaporates through the barrel staves each year.

Which char level is most commonly used in bourbon barrel production?

Answer: Char #3

Char #3 is the most widely used level in the industry, providing a balance of filtration and flavor extraction.

How does warehouse location (rick position) influence bourbon maturation?

Answer: Upper floors experience greater temperature swings, accelerating extraction and intensifying flavor

Barrels on upper warehouse floors experience more extreme temperature cycling, which drives greater spirit-wood interaction and produces more intensely flavored bourbon.

What is the maximum entry proof at which bourbon distillate may be placed into the barrel?

Answer: 125 proof (62.5% ABV)

Federal standards require bourbon to enter the barrel at no more than 125 proof (62.5% ABV).