Plan for plenty to drink, especially if it's a hot day. To be sure you have enough to quench the thirst of party-goers, count on 2 (8 oz.) cups per person. That's a lot to drink, but remember that it's summer in fact, if not officially, that you're serving salty chips and that this, after all, is a party. Each 12-ounce can of lemonade will make 2 quarts, or enough for 8 drinks.
The punch makes use of grenadine, a syrup that gives drinks a red cherrylike color and flavor. Although food encyclopedias say it comes in both alcoholic and nonalcoholic versions, local liquor stores report unfamiliarity with an alcohol version. The nonalcoholic flavoring turns soda pop into kiddie cocktails in such drinks as the Shirley Temple (7-Up and grenadine) and the Roy Rogers (cola and grenadine). Use the grenadine sparingly; too much turns a drink cloyingly sweet. Grenadine is available in supermarkets in the beverage-mix aisle, as well as at liquor stores.
1 (12 oz.) can frozen lemonade, thawed (or other lemonade mix to make 2 quarts)
6½ c. sparkling water (or enough to make 2 quarts)
2 tbsp. grenadine
Ice ring, if desired (see Note below)
Maraschino cherries, slices of oranges, lemons or limes, for garnish
Right before serving, make lemonade according to directions on can, substituting sparkling water for water. (The lemonade will foam up at first but will quickly settle down.) Add grenadine and blend throughout. Add ice ring, if desired.