Part One Flashcards
Light wine
Unfortified wine which is lacking in body and has low alchol content
Heavy wine
Fortified wine or liquor wine made by adding grape spirit (brandy)
Methods to make sweet wine
- Sauternes: sugar is left after fermentation
- Chaptalization
- VDN: add alchol in the first stages of fermentation
- Vin de liqueur/Mistelle: add grape spirit (brandy) to I fermented must
Example of Vin de Liqueur
Pienau de Charante
1 advantage of screw caps
Wine ages slower
1 fault scorecard wine can have
Reduction ( hydrogene sulphide)
Warmer temperature enhance…and hide…
Enhance aromas, fruit, alchol and sweetness
Hide tannins and acidity
Cooler temperatures enhance… and hide…
Enhance tannins and acidity
Hide aromas, sweetness and alchol
Alchol levels
Low < 10
Medium - 10-11
Medium 11.5-12.5
Medium + 13-14
High 14 +
Viticulture contributing elements
Soil
Climate
Location
Aspect
Which soil do
Chardonnay
Merlot
Cabernet Sauvignon
Prefer?
C: limestone, calcareous and chalk
M: clay
CS: sand and gravel
Annual average ideal temperature to grow vines
Average is 14, not lower than 10
What happens to the grapes if it’s too hot?
Small grapes, think skin, low acidity and high alchol
What happens to the grapes if it’s too cold?
High acidity, less flavors and sugar
What is the winkler index?
It’s a classification of the climatic zones from 1 to 5 according to their annual averages. 1 is the coolest
Where is frost most common?
Chablis
Champagne
Germany
California
Methods to defeat frost
Oil stoves
Spersion system
Turbines and propellers
Natural solutions to defeat frost
South-facing aspects
Trees on top of the vineyard
Water bodies
Drainage
Wind
Main types of vine
Vitis Vinifera
Vitis riparia
Vitis rupestris
Vitis barlandieri
What’s an hybrid?
It’s a crossing between two different species of vines
Why was grafting born?
Due to phylloxera in the 19th century
When was the last case of phylloxera?
Yarra valley, 2007
What is grafting?
Technique to join a rootstock to a vitis vinifera
What types of grafting there are? Explain them
Bench grafting: one rootstock per type is joined with the other and put in a warm place to encourage fusion (nursery)
Head grafting: a grape grower with an established vineyard decides to switch variety. A graft of the new variety is attached to the chopped trunk
Why is the American vine not used for wine production?
It does not have appealing aromas and flavors
Methods to propagate a vine and explain them
Cuttying: section of a vine shoot is cut and planted
Layering: a cane is bent down to the ground, it grows roots and the link between the two is cut
How many yeast cells there are on the skin of a grape?
10k-100k
What is égrappoir?
The process of removing stalks before crushing
What do pips contain that is not suitable for winemaking?
Bitter oils
Parts of a vine
- Green parts: leaves, tendrils, fruit and flower, buds
- 1 year old wood
- Permanent wood
- Roots
Cabernet Sauvignon came from the crossing of which two varieties?
Cabernet franc and Sauvignon blanc
Muller Thurgau came from the crossing of which two varieties?
Madeline royal and Riesling
Pinotage came from the crossing of which two varieties?
Cinsault and Pinot noir
What is an hybrid? And give an example
A vine which parents come from two different Species
Vidal from Canada
Where has phylloxera never arrived?
Portugal, Chile, mosel, Argentina, Australia
Define sustainable agriculture
A type of agriculture that limits the use of chemicals although it is allowed
Define organic agriculture
A type of agriculture where chemicals are almost non-existent
Define Biodynamic agriculture
A type of agriculture created by rudolf Steiner in 1924 which is based in astronomy, philosophy and cosmology. No chemicals, only preparations
Characteristics of natural wine
Grapes come from organic/biodynamic farming
Hand picking only
No alterations
No filtering or fining
Need to be decanted and filtered
In 2020 INAO created “vin method naturel”
What categories of natural wines exist?
Sans sulphite ajoutès
30ml\l de sulphite ajoutès
Vineyards pets
Phylloxera
Mammals and birds
Nematodes
Insects
Fungal diseases in vineyards
Powdery mildew
Downy mildew
Grey rot
Esca
Dead arm/eutypa
Other deseases in vineyards
Viruses
Bacterial diseases
Coulure
Flavescence doree
Millerandage
Pierce’s desease
Viruses in vineyards
Leaf roll virus
Fan leaf virus
What is triage?
Process of hand-sorting grapes bro get rid of bad quality ones
What is maceration pelliculaire or cold soak?
Skin contact
What is cuvaison?
Fermentation starts while in contact with the skins
What is vin de goutte?
Free-run
Free-flow wine
What is vin the presse?
The resulting wine from pressing skins and everything
What is the Marc?
Mix of skins, pips, stems, and stalks that can be used as fertilizer or distilled again to produce a regional brandy es. Marc de Bourgogne