Grapefruit Sorbet Recipe

Extract and prepare

Zest one grapefruit to get about 1 tablespoon zest. Juice fresh ruby grapefruits until you have 2 cups of juice. Strain the juice through a fine-mesh sieve to remove pulp and seeds. Measure and set aside.

Make simple syrup

In a small saucepan, combine 1 cup water and 1 cup granulated sugar. Add the grapefruit zest. Bring to a gentle simmer over medium heat, stirring until the sugar dissolves. Simmer 2 minutes to infuse the zest, then remove from heat.

Finish sorbet liquid

Stir in 2 tablespoons light corn syrup (or glucose) into the hot syrup to help inhibit large ice crystals and improve scoopability. Add 1 tablespoon fresh lemon juice and 1 teaspoon fine sea salt. Let the syrup cool to room temperature (about 20–30 minutes). Once cool, strain out the zest.

Combine and chill

Mix the cooled syrup with the strained grapefruit juice. Taste and adjust: if too tart, add up to 1–2 tablespoons sugar dissolved into a little warm water; if too sweet, add a touch more lemon juice. Chill the combined mixture thoroughly in the refrigerator until fully cold (at least 2 hours, preferably overnight).

Churn or freeze

Pour the chilled grapefruit mixture into an ice cream maker and churn according to the manufacturer's instructions until it reaches a soft-serve consistency (usually 20–30 minutes). If you don't have an ice cream maker, pour mixture into a shallow metal pan and freeze, stirring vigorously every 30 minutes for 2–3 hours to break up ice crystals until smooth and scoopable.

Harden

Transfer churned sorbet to a lidded container, pressing a piece of plastic wrap directly on the surface to prevent ice crystals. Freeze until firm, at least 2–4 hours.

While the sorbet chills, make the salted cream. In a small bowl, whisk together 1/2 cup heavy cream, 2 tablespoons mascarpone, 1 tablespoon powdered sugar, and a pinch of fine sea salt until smooth and slightly thickened but still spoonable. Taste and adjust salt or sweetness. Refrigerate until ready to serve. Keep chilled — the mixture should be soft, not whipped to stiff peaks.

Cook sauce

In a small saucepan combine 1 cup blackberries, 2 tablespoons granulated sugar, 1 teaspoon lemon juice, and 1 tablespoon water. Bring to a gentle simmer over medium heat, mashing the berries with a spoon or spatula. Cook 4–6 minutes until the berries break down and the mixture thickens slightly.

Finish sauce

Remove from heat and let cool a few minutes. For a smooth sauce, pass through a fine-mesh sieve, pressing to extract as much purée as possible; discard seeds. For a chunky sauce, leave as is. Taste and adjust sweetness or acidity. Chill before serving.

Plate and garnish

To serve, scoop sorbet into chilled bowls. Add a small spoonful or quenelle of salted cream on the side or on top. Spoon or drizzle 1–2 tablespoons blackberry sauce over the sorbet. Garnish with 1 fresh blackberry and a mint leaf each. If desired, sprinkle a tiny pinch of flaky sea salt over the cream or sorbet to emphasize the 'salted' element.