Vinification Flashcards
3 Pre-Fermentation Factors
Sorting
De-stemming
Crushing
Fermentation Equation
Sugar + Yeast = Alcohol, CO2, Flavors and Aromas, Heat
3 Types of Aging Vessels
Wood
Stainless Steel
Concrete
Difference in American and French Oak
American - bold, more intense flavors of vanilla, baking spices, dill and coconut
French - subtler aromas of vanilla, toast and Spice
Malolactic Fermentation
Tart malic acids are converted to softer lactic acids. Can impart buttery or creamy textures to white wines
Carbonic Maceration
Tanks filled with whole berries are blanketed under CO2 gas. Grapes ferment from the inside. Berries at the bottom of the tank are crushed and ferment naturally. Beaujolais
Lees Contact
Leave white and sparkling wines in contact with the dead yeast produced during fermentation. Provide richness, creaminess, and texture. Aromas of... Bread dough Yeast Toast White flowers Nuts
Two Methods of Must Adjustment
Chaptalization-addition of sugar to must to increase final alcohol content
Acidification-addition of tartaric acid to increase acidity of must to achieve better balance of the wine
Fining
Done to clarify wine.
Cold Stabilization
Process that causes tartrate crystals to precipitate out of the wine at very low temps
Filtration
Wine is passed through a series of filters to extract yeast and other microbes, assuring wine doesn’t re-fermentat