01 - In a small saucepan, combine granulated sugar and water. Bring to a simmer over medium heat, stirring until the sugar dissolves. Remove from heat, add fresh basil leaves, and let steep for 10 minutes. Strain and discard basil.
02 - In a blender, combine blueberries, lemon zest, lemon juice, basil-infused syrup, and a pinch of salt. Blend until completely smooth.
03 - Pour the mixture through a fine mesh sieve into a bowl to remove skins and seeds for a smoother texture.
04 - Transfer 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 sorbet is smooth and scoopable.
05 - Alternatively, churn the sorbet base in an ice cream maker according to manufacturer's instructions to achieve a creamier consistency.