Wine is an alcoholic beverage, made of fermented fruit juice, usually from grapes. The natural chemical balance of grapes lets them ferment without the addition of sugars, acids, enzymes, or other nutrients. Grape wine is produced by fermenting crushed grapes using various types of yeast.
There is an infinite array of possible wine and food pairings. There are basic rules of thumb that are normally followed when picking a wine to match with your meal. However, nothing here is set in stone, so always make sure you drink what you like best, not what you think is the "proper" food and wine pairing. Here is are a couple of great tools that allow you to pick specific foods, and then recommends a wine to pair with it, and vice versa: