Old-Fashioned Coffee Soda

Serves: 4

3 cups chilled brewed coffee, preferably made from a mild Colombian blend
1 1/2 tablespoons sugar
3 cups (1 1/2 pints) good-quality coffee ice cream
1 cup soda water
4 teaspoons Kahlua or other coffee liqueur (optional)
1/2 cup heavy or whipping cream, whipped to soft peaks
Shaved dark chocolate (optional)

Pour the coffee into a 4-cup or larger glass measuring cup with a spout,
and stir in the sugar. Place 2 large scoops (about 1/3 cup each) into
each of four tall 13-ounce glasses. Pour 3/4 cup of the sweetened coffee
into each glass, then add 1/4 cup soda water to each. If desired, add 1
teaspoon Kahlua to each serving. Top the sodas with some whipped cream and, if desired, sprinkle with shaved chocolate. Serve with straws and long spoons.