Fermentation Fundamentals
This microorganism is responsible for converting sugars into alcohol during beer fermentation.
What is yeast?
This unit operation separates the sweet wort from the grain bed.
What is lautering?
The compound primarily responsible for beer bitterness.
What are iso-alpha-acids?
This measurement is used to track fermentation progress.
What is specific gravity?
This byproduct of brewing can be repurposed as animal feed or compost.
What is spent grain?
The two main byproducts of alcoholic fermentation.
What are ethanol and carbon dioxide?
This vessel is used to boil the wort and sterilize it before fermentation.
What is the brew kettle?
This compound, formed by oxidation, gives beer a "cardboard" off-flavor.
What is trans-2-nonenal?
Controlling this parameter in the fermenter helps prevent the production of off-flavors like fusel alcohols.
What is temperature?
This system recovers energy from boiling wort to reduce steam usage.
What is a vapor condenser?
This metabolic pathway is used by yeast under anaerobic conditions.
What is glycolysis?
This equipment cools hot wort quickly before fermentation.
What is a heat exchanger? or what is a wort chiller?
This common addition contributes to beer's sourness in sour beer styles.
What is lactic acid?
This feedback control method adjusts temperature, pressure, or flow in real-time using sensors and actuators.
What is PID?
This CT organization has a Sustainable Brewery certificate program.
What is DEEP?
The name for the period yeast experiences after pitching before active fermentation begins
What is lag?
This is the name of the tank used for fermentation, often jacketed for temperature control.
What is a fermenter?
This compound is a precursor to ethanol and can contribute a green apple flavor if not fully reduced.
What is acetaldehyde?
This language is used for programmable logic controllers (PLCs).
What is ladder logic?
Some breweries are capturing this during fermentation.
What is carbon?
This parameter, often measured in °P or SG, indicates the amount of sugar present in wort before fermentation.
What is original gravity?
This late-stage hopping technique adds aroma without significant bitterness and is typically performed during or after fermentation.
What is dry hopping?
This nitrogen-containing compound (very generic compound) can cause beer haze if not properly controlled.
What is a protein?
This process causes oxidation without the presence of oxygen.
What is a redox reaction?
Yeast are being used to recover these types of compounds.