Champagne, vs. Prosecco

Champagne is a sparkling wine from France and Prosecco is from Italy. The difference in price is partially from the production method used to make each wine. Both have flavonoids that have antioxidant properties, just as with red wine.

Champagne is more time intensive to produce and enjoys better marketing, thus affecting higher price. Champagne is primarily Chardonnay, Pinot Noir, and Pinot Meunier grapes with higher acidity. Since carbonation develops under high pressure, Champagne has fine, persistent bubbles. Pairing champagne with potato chips or fried chicken may sound odd, but is very delicious.
Prosecco is made with primarily Glera grapes (formerly known as Prosecco).  Prosecco can be spumante ("sparkling wine"), frizzante ("semi-sparkling wine"), or tranquillo ("still wine"). Because it is aged in large tanks with less pressure, Prosecco has lighter, frothy bubbles that do not last as long. Prosecco is a bit sweeter than champagne.

Incidentally, in some countries, it is illegal to label any product Champagne unless it both comes from the Champagne region in France and is produced under the rules of the appellation. The United States has a grandfather clause stating that wineries which were operating and producing sparkling wine before the agreement was signed in 2005 are legally, according to US law, able to use the term “champagne” on their label. One company that does is Korbel.