To make a quick single serving of ice coffee, you can follow this recipe. (Just adjust it for more servings.)
1/4 cup instant coffee
1/4 cup sugar
1/4 cup hot water
4 cups cold milk
Sweetened whip cream
First add the coffee and the sugar to the hot water. Mix until the ice coffee is blended. Then add the cold milk and stir again. For better results, do this in a blender so you get the foamy kind of ice coffee. When you’re done, add a dollop of sweetened whip cream on top. Serve.