California account for 80-90 percent of all U.S. wine.<a href="http://recipes.howstuffworks.com/food-facts/wine/winemaking.htm">How Wine Making Works</a>

Viticulture is the process affected by the complex interaction between an area's soil, topography and climate.<a href="http://recipes.howstuffworks.com/food-facts/wine/winemaking.htm">How Wine Making Works</a>

In the winemaking process, must is the name for the crushed grapes and juice.<a href="http://recipes.howstuffworks.com/food-facts/wine/winemaking.htm">How Wine Making Works</a>

The red grape skins give red wines their dark color.<a href="http://recipes.howstuffworks.com/food-facts/wine/winemaking.htm">How Wine Making Works</a>

Glycol is used to keep fermentation tanks at 40 degrees Fahrenheit.<a href="http://recipes.howstuffworks.com/food-facts/wine/winemaking.htm">How Wine Making Works</a>

Glycolysis is the name of the 10-step process whereby the glucose is broken down by yeast.<a href="http://recipes.howstuffworks.com/food-facts/wine/winemaking.htm">How Wine Making Works</a>

The fermentation process takes 2-4 weeks.<a href="http://recipes.howstuffworks.com/food-facts/wine/winemaking.htm">How Wine Making Works</a>

White wine is allowed to settle before the yeast is filtered out of it.<a href="http://recipes.howstuffworks.com/food-facts/wine/winemaking.htm">How Wine Making Works</a>

Riddling is the name of the process whereby the bottle is placed upside-down and rotated one-eighth of a turn every day, allowing the dead yeast cells to settle into the neck of the bottle.<a href="http://recipes.howstuffworks.com/food-facts/wine/winemaking.htm">How Wine Making Works</a>

Champagne has a mixture of white-wine brandy and sugar added to top off the bottle.<a href="http://recipes.howstuffworks.com/food-facts/wine/winemaking.htm">How Wine Making Works</a>