Champagne is the premier sparkling wine from the Champagne region of France. French Champagnes are typically made from a blend of Chardonnay and Pinot Noir grapes. The most commonly found types of Champagne found in the U.S. are Brut, which is a dry Champagne, Blanc de Noirs, from red grapes and Blanc de Blanc, from white grapes, and Rose, which is referred to as Pink Champagne. Demi-Sec is the sweetest Champagne.
If you don't have Champagne you can use one of these appropriate substitutes:
To replace with a beverage without alcohol:
To replace Champagne with another beverage with alcohol