CBP Ingredients & Raw Materials 3

Question 1

What is 'backset' (also called setback or stillage) in bourbon production?

Accepted Answer

The spent liquid from the bottom of the still added to new mash to regulate pH

Answer

Backset is the spent liquid residue from the base of the still after distillation; it is added to new mash in the sour mash process to lower pH, inhibit bacteria, and maintain fermentation consistency.

Question 2

What makes a yeast strain 'proprietary' in the context of bourbon distilling?

Accepted Answer

It is a unique culture maintained and used exclusively by a specific distillery for a signature flavor

Answer

Proprietary yeast strains are unique cultures developed and closely guarded by individual distilleries to consistently produce their distinctive house flavor profiles across every batch.

Question 3

What is the process that makes barley 'malted' before it is used in a bourbon mash bill?

Accepted Answer

Soaking, germinating, and then kiln-drying the barley to activate enzymes

Answer

Malting involves steeping barley in water to initiate germination, which activates amylase enzymes, followed by kiln-drying to halt germination and preserve the enzymatic activity for use in mashing.

Question 4

What is the maximum proof at which bourbon may be distilled under federal regulations?

Accepted Answer

160 proof (80% ABV)

Answer

Federal law caps bourbon distillation at 160 proof (80% ABV) to ensure the distillate retains sufficient grain-derived flavor compounds and character rather than approaching neutral spirit.

Question 5

Why is water-to-grain ratio an important variable in bourbon mash preparation?

Accepted Answer

It affects enzyme efficiency, fermentation yield, and flavor profile of the bourbon

Answer

The water-to-grain ratio influences how efficiently enzymes convert starches, how well yeast can ferment the resulting sugars, and ultimately the yield and final flavor characteristics of the bourbon.

(CBP) Certified Bourbon Professional Practice Test

(CBP) Certified Bourbon Professional Practice Test

CBP Ingredients & Raw Materials 3