Introduction to Winemaking Flashcards
(20 cards)
The science of description and identification of grapevine cultivars from the genus Vitis
Ampelography
What are some of the ecological applications of winemaking?
plant-insect interactions, interactions of grapevines with cover crops/border plants/etc, climate change effects
What are some of the applications of physics in viticulture?
CO2 in sparkling wine, distillation & evaporation, water transport in plants
What is wine?
fermented grape juice
When must wine be labeled as something other than just wine?
If the wine is made from fruits other than grapes, the name(s) of the fruit must be specified
Wine is made from [A], while beer is made from [B]
[A] fermented fruit, [B] grain
How often can wine be made? Beer?
Wine is made once a year when grapes ripen & harvested; beer can be made anytime w/ stored ingredients
inoculated with yeast
a. wine
b. beer
a. wine
fermented with yeast
a. wine
b. beer
b. beer
How are grapes processed to make wine?
crushed to release juice
How is grain processed to make beer?
grain is sprouted, dried, cracked and steeped in hot water to release sugars
Is wine basic or acidic? What is generally the range of pH for wines?
acidic, low pH ranging generally from 3.2 to 3.5
Should we be concerned with pathogenic growth in wine? Why or why not?
No, wine’s acidity and alcohol content means that nothing pathogenic can grow in the wine
What are sweet wines?
wines containing residual sugars, also known as dessert wines
What are dry wines?
wines that have little to no residual sugars left
What is the range of alcohol content for wines?
5% abv to 20%+
Most dry wines have an abv of [blank]?
12% to 14% abv
What are tannins?
naturally occurring polyphenols present in the seeds and skins of grapes and in the oak barrels wine is aged in
What do tannins contribute to wine?
bitterness (taste) and astringency (feeling)
Where do the aromas and flavor compounds in wine originate from?
fruit, wine making process, and aging in barrels or in bottles
