WSET DIPLOMA D1 NEWEST 2025 ACTUAL EXAM
COMPLETE 250 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW!!
How is flotation clarifying performed? - ANSWER-Fining agents added to must to
bind particles together
bubbling gas up through the must
particles float on the bubbles to the top
Particles are skimmed off the surface
Why is white wine fermentation cooler than red wine fermentation? - ANSWER-
Volatile aromas and flavor compounds desired in many white wines are best
produced and retained at cool temperatures (15C / 59F)
What are the effects of malolactic fermentation on wine? - ANSWER-Reduction in
acidity
Increase in pH
Increased microbiological stability
Modification of flavors
What is the purpose of lees aging in white wines? - ANSWER-Give more body
Soften the mouthfeel
Stabilize the wine
Protect wine from oxygen
May introduce some reductive sulfur compounds
,What is the main source of both heat and sunlight? - ANSWER-Solar radiation
What temperature ensures the dormancy of vines - ANSWER-Under 10C / 50F
What temperature can cause winter freeze and damage vines? - ANSWER--20C / -
4F
What factors can stimulate budburst? - ANSWER-Temperatures above 10C / 50F
Warm soil temperatures
What is the optimal temperature for shoot growth and leaf development? -
ANSWER-18-33C / 64-91F
What temperatures promote successful flowering? - ANSWER-Above 17C / 63F
What temperatures promote successful fruit set - ANSWER-26-32C / 79-90F
What is the impact of cold, damp conditions? - ANSWER-Problems for flowering
and fruit set reducing yield and quality
How does temperature impact grape ripening - ANSWER-Sugar accumulation is
faster at warmer temperatures
Malic acid degradation increases at warm temperature
Formation of aroma precursors and compounds
,Color
Tannins
How does current year temperatures impact the following year - ANSWER-Warm
temperatures promote bud fruitfulness next year
What 2 options are there for wine following the completion of all winemaking? -
ANSWER-Finished and packaged
Matured for a period of time before bottling
How will wines be handled that were made to preserve young, fruity or aromatic
style by protection from oxygen - ANSWER-Stored in vessels impermeable to
oxygen (stainless)
Protected from oxygen using SO2 or inert gas
Finished and packaged soon after fermentation
What 3 factors influence wine during maturation? - ANSWER-Oxygen
New wood
Yeast lees
What is the general impact of oxidation on wine? - ANSWER-Gradual reduction in
many primary aromas
Development of tertiary aromas
Wine color (whites darken, red color stability/intense)
Softens tannins
, How does oxidation stabilize red wine color? - ANSWER-Anthocyanins bind with
tannins which protects from being absorbed by yeast lees or bleached by SO2
What influences the speed of oxidation (3)? - ANSWER-Amount of oxygen
exposure
Compounds in the wine
Temperature (higher temp = higher rate of oxidation)
Why is red wine more tolerant to oxidation? - ANSWER-Higher content of anti-
oxidative phenolic compounds (tannins)
What are methods for exposing wine to oxygen - ANSWER-Use of wood vessels
Micro-oxygenation
What is the traditional method for slow gradual oxygen exposure? - ANSWER-
Storage in small wooden vessels
What is a cheaper method for exposing wine to oxygen than barrels? - ANSWER-
Micro-oxygenation
What is micro-oxygenation? - ANSWER-Bubbling oxygen through the wine (mg/L
per month)
Where and when is micro-oxygenation performed? - ANSWER-Stainless steel
tanks for several months after fermentation
COMPLETE 250 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW!!
How is flotation clarifying performed? - ANSWER-Fining agents added to must to
bind particles together
bubbling gas up through the must
particles float on the bubbles to the top
Particles are skimmed off the surface
Why is white wine fermentation cooler than red wine fermentation? - ANSWER-
Volatile aromas and flavor compounds desired in many white wines are best
produced and retained at cool temperatures (15C / 59F)
What are the effects of malolactic fermentation on wine? - ANSWER-Reduction in
acidity
Increase in pH
Increased microbiological stability
Modification of flavors
What is the purpose of lees aging in white wines? - ANSWER-Give more body
Soften the mouthfeel
Stabilize the wine
Protect wine from oxygen
May introduce some reductive sulfur compounds
,What is the main source of both heat and sunlight? - ANSWER-Solar radiation
What temperature ensures the dormancy of vines - ANSWER-Under 10C / 50F
What temperature can cause winter freeze and damage vines? - ANSWER--20C / -
4F
What factors can stimulate budburst? - ANSWER-Temperatures above 10C / 50F
Warm soil temperatures
What is the optimal temperature for shoot growth and leaf development? -
ANSWER-18-33C / 64-91F
What temperatures promote successful flowering? - ANSWER-Above 17C / 63F
What temperatures promote successful fruit set - ANSWER-26-32C / 79-90F
What is the impact of cold, damp conditions? - ANSWER-Problems for flowering
and fruit set reducing yield and quality
How does temperature impact grape ripening - ANSWER-Sugar accumulation is
faster at warmer temperatures
Malic acid degradation increases at warm temperature
Formation of aroma precursors and compounds
,Color
Tannins
How does current year temperatures impact the following year - ANSWER-Warm
temperatures promote bud fruitfulness next year
What 2 options are there for wine following the completion of all winemaking? -
ANSWER-Finished and packaged
Matured for a period of time before bottling
How will wines be handled that were made to preserve young, fruity or aromatic
style by protection from oxygen - ANSWER-Stored in vessels impermeable to
oxygen (stainless)
Protected from oxygen using SO2 or inert gas
Finished and packaged soon after fermentation
What 3 factors influence wine during maturation? - ANSWER-Oxygen
New wood
Yeast lees
What is the general impact of oxidation on wine? - ANSWER-Gradual reduction in
many primary aromas
Development of tertiary aromas
Wine color (whites darken, red color stability/intense)
Softens tannins
, How does oxidation stabilize red wine color? - ANSWER-Anthocyanins bind with
tannins which protects from being absorbed by yeast lees or bleached by SO2
What influences the speed of oxidation (3)? - ANSWER-Amount of oxygen
exposure
Compounds in the wine
Temperature (higher temp = higher rate of oxidation)
Why is red wine more tolerant to oxidation? - ANSWER-Higher content of anti-
oxidative phenolic compounds (tannins)
What are methods for exposing wine to oxygen - ANSWER-Use of wood vessels
Micro-oxygenation
What is the traditional method for slow gradual oxygen exposure? - ANSWER-
Storage in small wooden vessels
What is a cheaper method for exposing wine to oxygen than barrels? - ANSWER-
Micro-oxygenation
What is micro-oxygenation? - ANSWER-Bubbling oxygen through the wine (mg/L
per month)
Where and when is micro-oxygenation performed? - ANSWER-Stainless steel
tanks for several months after fermentation
