Spruce up your summer drink repertoire. Add 1 part pineapple juice to 3 parts Prosecco, the sparkling wine of northeast Italy. Or you can serve Prosecco straight up as an alternative to white wine or beer. It's lighter and cheaper than champagne, and it goes with everything from cheese and crackers to grilled fish and chicken. We like Zardetto ($9 to $15, available at wine stores).