In The Vineyard Flashcards
What does the skin of the grape contribute to winemaking?
Color, tannins, flavor
What does the pulp of the grape contribute to winemaking?
Sugar, acid level, water and flavors
What does the stem and seeds of the grape contribute to winemaking?
Tannins
Which kind of grape has higher levels of color and tannins in the skin?
Black grapes
What does a vine require to grow?
Warmth Sunlight Water Nutrients CO2
What are the different stages of grape fermentation?
Flowering
Fruit Set
Veraison
Ripening
What is “extra” ripening”
The process of leaving grapes on the vine past the point when they might normally be harvested so the sugars and acids are concentrated in the grapes - often used to make sweet wine
What is botrytis/noble rot?
A fungus that can grown on grapes making tiny holes in the skin causing water to evaporate.
This has the effect of concentrating acids, sugars and flavors in grapes which are then used to make sweet wine
Why would a winemaker allow grapes to remain on the vine in the winter and freeze?
To freeze the water in the grapes, concentrating acids, sugars and flavors.
wine made from frozen grapes on the vine is called Icewine/Eiswein
What is the temperature range of cool grape growing climates?
62F or below (16.5C)
What is the temperature range of moderate grape growing climates?
62F - 65F (16.5-18.5C)
What is the temperature range of warm grape growing climates?
65F - 70F (18.5-21C)
What changes occur in grapes when they ripen?
Grapes swell with water
Acidity drops
Sugar increases
Flavors develop
How do the flavors of white grapes change as they ripen?
Flavors develop from green (unripe?) fruit to stone and/or tropical fruit
How to the flavors of black grapes change as the ripen?
Flavors develop from fresh to cooked fruit
What latitudes are most wine-growing regions located between?
30-50 degrees north or south of the equator
How does altitude influence growing conditions?
Temperature drops with altitude
How does proximity to seas influence growing conditions?
Ocean currents can cool warm regions or warm cool regions