Nectarines, Grapes, and Blueberries with Orange and Cardamom | America's Test Kitchen

Ingredients

• 4 teaspoons sugar
• 1 teaspoon grated orange zest
• 1/8 teaspoon ground cardamom
• 3 medium nectarines (about 6 ounces each), pitted and cut into 1/2-inch pieces (about 3 cups)
• 9 ounces large green grapes , halved pole to pole (about 2 cups)
• 1 pint blueberries , picked over
• 1 - 2 tablespoons fresh lime juice (see note)