One of the most handy tools for a wine drinker is a corkscrew. This small device was invented to open a bottle of wine by screwing into the cork and allowing a person to pull the cork out of the bottle. There are many styles of corkscrew but the original design remains the same.
Acidity
Acidity in wine is the level of acid that the wine contains. Wines with more acid in them taste more tart or sour.