5: Wine Making Flashcards
What is carbonic maceration?
Natural fermentation process created in Beaujolais region of France with Gamay. Full grapes are put in a tank with CO2 where fermentation process starts automatically within the grape. at 2% alcohol the grapes burst releasing the juice and then the fermentation is continued with the normal way of adding yeast. results in a lighter body with fruiter flavors
What is crushing?
Splitting of grapes to release juice
What is pressing?
squeezing crushed grapes to extract as much liquid as possible. can happen before or after fermentation
How is fermentation started?
by adding yeast to the grape juice which feed on the sugars producing alcohol and CO2. They die, causing the fermentation to stop when the alcohol reaches around 16% or the sugar in the grapes is gone
Order for red winemaking
Crushing, Fermentation, Draining, Pressing, Maturation, Bottling
Order for white winemaking
Crushing, Pressing, Fermentation, Maturation, Bottling
Difference between Punching Down and Pumping over
Cap is pushed down with a plunger into the juice with Punching down, and with pumping over the juice is pumped onto the top of the cap with a hose
What is short maceration?
Used in making rosé. the juice is drained from the skins after just a few hours
4 ways to make sweet wines
- Using juice with concentrated grape sugars (Tokaji Aszú or TBA wines)
- Removing the yeast before fermentation is finished (White Zinfandel)
- Killing the yeast by adding more alcohol - fortification (Port wine)
- Adding unfermented grape juice to fully fermented dry wine
Red wine fermentation temperature
20-32 C (68-90F) in order extract color and tannins from grape skins
White wine fermentation temperature
12-22 C (54-72F)