01 - Add granulated sugar and water to a small saucepan. Simmer gently over medium heat, stirring continuously until the sugar is fully dissolved. Remove from the heat, stir in basil leaves, and steep for 10 minutes. Strain the syrup, discarding basil leaves.
02 - Place blueberries, lemon zest, freshly squeezed lemon juice, basil-infused syrup, and salt in a blender. Process until the mixture is completely smooth.
03 - Pour the blueberry mixture through a fine mesh sieve into a bowl to remove any skins and seeds for an ultrasmooth texture.
04 - Transfer the strained mixture to a shallow freezer-safe container. Cover and freeze for 4 to 6 hours, stirring with a fork every 30 to 60 minutes to break up ice crystals. Continue until the sorbet achieves a smooth, scoopable consistency.
05 - If using an ice cream maker, churn the blended mixture according to the manufacturer’s instructions for a creamier result.