01 - Portion Rebel ice cream evenly into two tall glasses, using approximately 1 cup per glass.
02 - Slowly pour 1 cup of chilled sugar-free soda over the ice cream in each glass, allowing it to cascade down the sides.
03 - Wait briefly for the foam to settle, then crown with a dollop of sugar-free whipped cream and fresh berries if using. Serve immediately with straws and long spoons.