Lemon-lime soda gives this rich beverage a delicate flavor. Even people who don't care for eggnog won't be able to resist a creamy glassful. It's a hit at our Christmas parties. —Lorrie Sexauer, DeSoto, Texas
In a saucepan, combine 2 cups half-and-half cream, eggs and sugar. Cook and stir over medium heat until mixture reaches 160° or is thick enough to coat a metal spoon, about 9 minutes. Remove from the heat; stir in vanilla, nutmeg if desired and remaining half-and-half. Cover and refrigerate for at least 3 hours.
Pour into a punch bowl. Stir in whipping cream and soda. Top with scoops of ice cream and sprinkle with cherries. Serve immediately.