Sparkling Wine Production Flashcards
What are 3 requirements for grapes destined for sparkling wines?
(in comparison to grapes destined for still wines)
- Relatively low in sugar
- High acid
- No green or herbaceous flavors
Under which climates is it easy to meet these requirements?
Cool climates
Why are cool climates more suitable to obtain these requirements?
(Low sugar/ High Acid/ No green flavor)
Because in cool climates:
- sugar accumulate slower than in warm climate
- acidity doesn’t drop as fast as in warm climate
= All of which gives time for aromas to develop.
Why are hot climates less suitable to obtain these requirements?
In hot climates, sugar accumulates so FAST that aromatics have NOT ENOUGH TIME to develop to desired levels and still taste green. Besides, acidity drops to undesired levels. All of which would lead to unbalanced finished wines.
Why is a relatively low sugar level required?
Because after the base wine is made, the second fermentation (to create CO2) will increase the level of alcohol of the finished wine of 1.2 to 1.3% abv.
If the base wine is too rich in alcohol, the finished wine will be unbalanced.
Why is the high level of acidity desired?
Because most sparkling are made in a refreshing style.
Why are premium sparkling wines hand-picked and pressed immediately & gently to set maximums?
Because whole bunches of unsplit grapes are required.
Bruised or crushed grapes would liberate juice susceptible to oxidation (and lead to color/ tannin extraction when red grapes are used)
Why would a producer of inexpensive sparkling in a warm climate still opt for machine harvest?
For speed.
What are the 5 sparkling methods covered on WSET Level 3 program?
Traditional Method
Transfer Method
Tank Method
Asti Method
Carbonation
What are the 7 steps of the TRADITIONAL METHOD?
- Making the base wine, 2. Blending, 3. Second Fermentation, 4. Yeast Autolysis, 5. Riddling, 6. Disgorgement & Ageing, 7. Bottle Ageing
What are some options available to a winemaker in the production of the dry, neutral high acid BASE WINE?
MLF or not
Maturation in oak or not
Use of the wine the following year or store for future years.
What are 3 key functions of blending base wines?
- Create a House Style that is consistent over years despite vintage variation (by blending different vineyards, varieties or vintages)
- To improve the Balance of the wine (the acidity & citrus of Chardonnay & the red Fruit of Pinot Noir)
- To enhance complexity (old reserve wines or oaked wines with newer wines from different plots)
What is added to the base wine for the next step?
What are the 5 components of this addition?
The “Liqueur de Tirage”, composed of:
Wine/ Sugar/ Yeast/ Yeast Nutrients/ Clarifying Agent
What is produced during the SECOND FERMENATION?
Dissolved CO2
Additional Alcohol (1.2 to 1.3% abv)
What is the typical pressure inside a bottle of sparkling wine made by Traditional Method?
5 to 6 Standard Atmospheres (atm)
or a little over 5 to 6 Kilo Force per sqcm (Kgf/ cm2)
or a little over 5 to 6 Bar
After a couple of weeks, the second fermentation is complete.
What happens in the next few months before riddling and disgorgement?
YEAST AUTOLYSIS
Or the break down of dead yeasts producing new compounds responsible for flavors of bread, biscuit and toast, brioche, croissant over 5 or 6 years
What are the purpose and process of RIDDLING?
RIDDLING’s purpose is to prepare for disgorgement (or the removal of dead yeast)
It consists of progressively bringing dead yeast to the neck of the bottle by twisting & inclining bottles upside down.
What is the name of the modern tool used for riddling?
What was basic tool used ?
Giropalettes (able to handle 500 bottles at once)
Pupitres (racks to hold bottles riddled by employees)