Name the main parts of a grape and what they contain
1- skin (color, tannin)
2- pulp (water, sugar, acid)
Name the key stages in the annual cycle of grape growing
Flowering (spring), flowers become grapes, grapes ripen (summer), grapes are picked in late summer
Grape ripening process
1- grapes swell with water
2- sugar levels in grapes rise
3- acid levels in grapes fall
4- flavors become riper
5- white grapes change from green to golden
6- black grapes change from green to purple
The skin of a grape contains
tannins
Tannins can make your mouth feel
dry
The skin of white grapes have a ________ color
golden
The pulp of a grape is _____ and _______
soft; fleshy
The color of the pulp is the same or different depending on the color of the grapes skin
the same
What does the pulp contain?
grape juice
Grape juice is mostly made of
water, sugar, acid
In order for the alcoholic fermentation process to take place, _________ are required
yeast
What is yeast
microscopic organisms that eat sugar and covert it into alcohol and carbon dioxide gas
What is the “equation” for the alcholic fermentation process
sugar + yeast —> alcohol/fermentation —> alcohol + carbon dioxide
The level of alcohol within a wine is usually measured as
alcohol by volume (abv)
What is wine?
Fermented grape juice
Where do grapes grow?
In places with the correct amount of sunlight, heat, and water
(30-50 degrees from the equator)
Cool climate regions include
Germany and Northern France
Grapes can ________ to ripen at all in cool climate regions
struggle
In cool climate regions it is common to grow _________ grapes
white
Warm climate regions include
Parts of Australia and Parts of California
In warm climate regions it is common to grow ______ grapes
black
What happens to sugar and acidity levels in grapes in colder regions?
lower levels of sugar
higher levels of acidity
What happens to sugar and acidity levels in grapes in warmer regions?
higher sugar levels
lower acidity levels
What are the requirements for alcoholic fermentation?
sugar and yeast