Court of Master Sommeliers Introductory Sommelier Exam 2026:
Certification Practice Test — Wine Regions, Grape Varieties,
Viticulture, Winemaking, Beverage Service & Food Pairing — 190
Multiple-Choice Questions with Answers & Detailed Rationales
SECTION 1: VITICULTURE AND VINIFICATION
Question 1
Which of the following best describes the primary purpose of canopy management in
viticulture?
A. To increase grape yield per vine regardless of quality
B. To regulate sunlight exposure and air circulation around grape clusters
C. To eliminate all pest populations without chemical intervention
D. To accelerate sugar accumulation while reducing acidity
Correct Answer: B
Explanation: Canopy management balances leaf exposure to optimize photosynthesis and
airflow, reducing disease pressure while ripening grapes evenly.
Question 2
A winemaker in a cool climate wishes to produce a wine with riper tannins and increased
color extraction from Cabernet Sauvignon. Which technique would best achieve this goal?
A. Whole-cluster fermentation with stems intact
B. Extended maceration post-fermentation
,C. Immediate pressing after crush
D. Cold stabilization before fermentation
Correct Answer: B
Explanation: Extended maceration allows prolonged skin contact, extracting more tannin
and color while softening harsh compounds through oxygen interaction.
Question 3
During alcoholic fermentation, which of the following is the primary role of yeast?
A. Convert malic acid to lactic acid
B. Convert sugar to ethanol and carbon dioxide
C. Convert tannins into anthocyanins
D. Convert ethanol into acetic acid
Correct Answer: B
Explanation: Yeast metabolizes grape sugars into ethanol and CO₂, the fundamental
transformation defining alcoholic fermentation in winemaking.
Question 4
Malolactic fermentation is most commonly employed to achieve which sensory outcome in
red wines?
A. Increased perceived acidity and crispness
B. Softer mouthfeel and buttery notes
,C. Enhanced fruit aromatics and floral notes
D. Reduced alcohol content
Correct Answer: B
Explanation: Malolactic conversion transforms sharp malic acid into softer lactic acid,
creating a creamy texture and buttery diacetyl notes.
Question 5
A producer in a warm climate harvests grapes at night. What is the primary reason for this
practice?
A. To reduce water usage during irrigation
B. To preserve grape acidity and prevent premature fermentation
C. To avoid labor costs during daytime hours
D. To increase sugar concentration through evaporation
Correct Answer: B
Explanation: Night harvesting preserves cooler fruit temperatures, maintaining fragile acidity
and preventing wild yeast from initiating fermentation prematurely.
Question 6
Which of the following grape components contributes primarily to a wine's tannin structure?
A. Pulp
B. Juice
, C. Skins and seeds
D. Yeast lees
Correct Answer: C
Explanation: Tannins are phenolic compounds extracted primarily from grape skins, seeds,
and stems during fermentation and maceration.
Question 7
Chaptalization is a winemaking practice that involves:
A. Adding acid to must to increase tartness
B. Adding sugar to must to increase potential alcohol
C. Adding water to reduce alcohol concentration
D. Adding tannin powder to enhance structure
Correct Answer: B
Explanation: Chaptalization adds sugar to grape must before fermentation, increasing
potential alcohol in underripe or cool-climate vintages.
Question 8
Which of the following describes the purpose of racking wine during aging?
A. To introduce oxygen for oxidative aging
B. To separate clear wine from sediment and lees
Certification Practice Test — Wine Regions, Grape Varieties,
Viticulture, Winemaking, Beverage Service & Food Pairing — 190
Multiple-Choice Questions with Answers & Detailed Rationales
SECTION 1: VITICULTURE AND VINIFICATION
Question 1
Which of the following best describes the primary purpose of canopy management in
viticulture?
A. To increase grape yield per vine regardless of quality
B. To regulate sunlight exposure and air circulation around grape clusters
C. To eliminate all pest populations without chemical intervention
D. To accelerate sugar accumulation while reducing acidity
Correct Answer: B
Explanation: Canopy management balances leaf exposure to optimize photosynthesis and
airflow, reducing disease pressure while ripening grapes evenly.
Question 2
A winemaker in a cool climate wishes to produce a wine with riper tannins and increased
color extraction from Cabernet Sauvignon. Which technique would best achieve this goal?
A. Whole-cluster fermentation with stems intact
B. Extended maceration post-fermentation
,C. Immediate pressing after crush
D. Cold stabilization before fermentation
Correct Answer: B
Explanation: Extended maceration allows prolonged skin contact, extracting more tannin
and color while softening harsh compounds through oxygen interaction.
Question 3
During alcoholic fermentation, which of the following is the primary role of yeast?
A. Convert malic acid to lactic acid
B. Convert sugar to ethanol and carbon dioxide
C. Convert tannins into anthocyanins
D. Convert ethanol into acetic acid
Correct Answer: B
Explanation: Yeast metabolizes grape sugars into ethanol and CO₂, the fundamental
transformation defining alcoholic fermentation in winemaking.
Question 4
Malolactic fermentation is most commonly employed to achieve which sensory outcome in
red wines?
A. Increased perceived acidity and crispness
B. Softer mouthfeel and buttery notes
,C. Enhanced fruit aromatics and floral notes
D. Reduced alcohol content
Correct Answer: B
Explanation: Malolactic conversion transforms sharp malic acid into softer lactic acid,
creating a creamy texture and buttery diacetyl notes.
Question 5
A producer in a warm climate harvests grapes at night. What is the primary reason for this
practice?
A. To reduce water usage during irrigation
B. To preserve grape acidity and prevent premature fermentation
C. To avoid labor costs during daytime hours
D. To increase sugar concentration through evaporation
Correct Answer: B
Explanation: Night harvesting preserves cooler fruit temperatures, maintaining fragile acidity
and preventing wild yeast from initiating fermentation prematurely.
Question 6
Which of the following grape components contributes primarily to a wine's tannin structure?
A. Pulp
B. Juice
, C. Skins and seeds
D. Yeast lees
Correct Answer: C
Explanation: Tannins are phenolic compounds extracted primarily from grape skins, seeds,
and stems during fermentation and maceration.
Question 7
Chaptalization is a winemaking practice that involves:
A. Adding acid to must to increase tartness
B. Adding sugar to must to increase potential alcohol
C. Adding water to reduce alcohol concentration
D. Adding tannin powder to enhance structure
Correct Answer: B
Explanation: Chaptalization adds sugar to grape must before fermentation, increasing
potential alcohol in underripe or cool-climate vintages.
Question 8
Which of the following describes the purpose of racking wine during aging?
A. To introduce oxygen for oxidative aging
B. To separate clear wine from sediment and lees
