D1 Week 3 - Multiple Choice Revision Questions Flashcards
What is one of the key differences in production methods for barrels produced from American oak rather than European oak?
- American oak is only air dried
- More heat is needed to bend American oak, resulting in higher toast aromas leaching into the wine
- American oak can only be split along the grain
- American oak can be sawn but not European oak
American oak can be sawn but not European oak
Due to the low porosity of American oak it can be sawn, thus maximising the yield of each log.
How does the size of the barrel affect the rate of maturation of wine?
- Larger barrels have no impact on the rate of maturation
- Large barrels speed up maturation
- Small barrels speed up maturation
- Smaller barrels slow down maturation
Small barrels speed up maturation
Due to the larger surface area of wood in contact with the wine and higher exposure to oxygen.
Which of the following are typical components of a blend?
- Wines of different quality
- Wines from different vintages
- Wines from different grape varieties
- Wines from different barrels
- Wines from different vinification processes
- Wines from different vineyard sites (or parcels)
2,3,4,5, and 6
In which order of the wine making process is blending generally carried out?
* Fermentation, blending, stabilisation, filtration and bottling
* Fermentation, stabilisation, blending, filtration and bottling
* Blending, fermentation, stabilisation, filtration and bottling
* Fermentation, filtration, stabilisation, blending, and bottling
Fermentation, blending, stabilisation, filtration and bottling
It is important to carry it out before the wine is ‘finished’ by stablisation and filtration.
What might be considered a disadvantage of centrifugation?
- The machines are expensive
- Is it a slow and laborious process
- They have limited applications in the winery
- They are only suitable for removing smaller particles in suspension
The machines are expensive.
Because of the expense, they are mainly used in large wineries
Which method of pre-fermentation clarification is commonly used for small volume, premium wines?
- Centrifugation
- Sedimentation
- Flotation
- Filtration
Sedimentation
What is the key difference between red winemaking and white winemaking processes?
- Destemming is only carried out in white wine making
- The timing of pressing
- Cold maceration is only carried out in white wine making
- Crushing is carried out in white winemaking only
The timing of pressing
Pressing is done post fermentation in red winemaking and pre fermentation in white winemaking
What is the most effective way of controlling the rate (speed) of fermentation?
- Choice of yeast
- Diammonium phosphate (DAP)
- Sulphur dioxide
- Temperature
Temperature
Cultured yeast can ensure an even and easier to control ferment but cannot control the rate of fermentation
Which of the following is NOT an example of a membrane filter?
- Earth filtration
- Cross-flow filtration
- Surface filtration
- Reverse osmosis
Earth filtration
In earth filtration, the wine passes through a medium e.g. diatomaceous earth
Which of the following cannot be treated by fining agents?
- Astringency and bitterness
- Oxidative taints
- Color
- Tartrates
Tartrates
Which fining agent is used with caution to remove colour?
- Casein
- PVPP
- Bentonite
- Charcoal
Charcoal
Which of the following fining agents is suitable for vegans?
- Gelatin
- Isinglass
- Casein
- PVPP (Polyvinylpolypyrrolidone)
PVPP
This is synthetic.
Which of the following is produced during malolactic conversion (MLF)?
- Alcohol
- Primary fruit aromas
- Carbon dioxide
- Smoke aromas
Carbon dioxide
How can malolactic conversion (MLF) be encouraged?
- By maintaining the temperature between 18 - 22°C/64-72°F
- Adequate cleaning of containers
- By clarifying the juice
- By decreasing the pH to below 3.3
By maintaining the temperature between 18 - 22°C/64-72°F
Why is it important to maintain humid conditions for wine being matured in oak?
- Prevents the wood from drying out
- Reduces evaporation
- Minimizes leaks in the wood
- Increases the uptake of wood characteristics in the maturing wine
1,2 and 3
Humid conditions do not increase the uptake of wood characteristics in the maturing wine.