Ingredients

3 cups water, divided1-1/2 cups sugar, divided6 teaspoons grated lemon zest, divided1 cup lemon juice, divided1-1/2 cups carbonated mineral water, dividedSalt1/2 cup minced fresh mint, coarsley chopped3 cups fresh or frozen blueberriesOptional: Lemon peel strips, fresh raspberries and mint sprigs

Preparation

For lemon sorbet, in a small heavy saucepan, bring 1 cup water, 1/2 cup sugar and 2 teaspoons lemon zest to a boil. Cook and stir until sugar is dissolved; cool. Add 1/2 cup lemon juice, 1/2 cup mineral water and a dash of salt. Transfer to an 8-in. square dish.

For mint sorbet, in a small heavy saucepan, bring 1 cup water, 1/2 cup sugar and 2 teaspoons lemon zest and mint to a boil. Cook and stir until sugar is dissolved; cool. Strain. Add 1/4 cup lemon juice, 1/2 cup mineral water and a dash of salt. Transfer to another 8-in. square dish.

For blueberry sorbet, in a small heavy saucepan, bring 1 cup water, 1/2 cup sugar, 2 teaspoons lemon zest and blueberries to a boil. Cook and stir until sugar is dissolved; cool. Cover and process for 2-3 minutes or until blended. Strain and discard seeds and pulp. Add 1/4 cup lemon juice, 1/2 cup mineral water and a dash of salt. Transfer to an 11x7-in. dish.

Freeze sorbets for 1 hour or until edges begin to firm; stir. Freeze 3 hours longer or until firm.

Just before serving, transfer sorbets separately to a food processor; cover and process for 1-2 minutes or until smooth. Scoop each flavor into serving dishes. Garnish as desired.