Concord Grape Sorbet
1 1/2 pounds Concord grapes (about 1 quart container)
1/4 cup water
1 1/2 tablespoons freshly squeezed lemon juice
Prepare an ice bath and set it aside. Combine the grapes and the water in a medium saucepan. Cook the grapes over medium-high heat until the liquid begins to bubble and the grapes start releasing liquid, about 4 minutes. Reduce the heat, and simmer until the juices are dark purple and grapes begin to break apart, about 3 minutes.
Pass mixture through a food mill, and then through a fine sieve, into a large bowl set in the ice bath; stir frequently until the mixture has completely cool. Stir in the simple syrup and lemon juice.
Transfer the mixture to an ice-cream maker. Freeze according to the manufacturer’s instructions. Transfer the sorbet to an airtight container, and store it in the freezer until ready to serve, up to 2 weeks.