Serve Champagne, sparkling wines, Pinot Grigio, Sauvignon Blanc, white Zinfandel, and other white wines at 35 to 40 degrees Fahrenheit (1.67 to 4.44 degrees Celsius). Chill for an hour and a half in a refrigerator. 20 minutes in an ice-water ice bucket would also suffice. Sweet dessert wines and dry sherry should be served in the same manner.