- 2 cups picked-over blueberries
 - 1 teaspoon freshly grated lemon zest
 - 1/3 cup sugar
 - 1 tablespoon fresh lemon juice
 - 1 teaspoon cornstarch
 - 2/3 cup all-purpose flour
 - 1 teaspoon baking powder
 - 3/4 teaspoon ground cardamom
 - 1/2 cup heavy cream
 
- Preheat oven to 400° F. and butter an 8-inch (1 1/2-quart) glass pie plate.
 - In a bowl toss together blueberries, zest, sugar, lemon juice, and cornstarch until combined well and transfer to pie plate.
 - Into another bowl sift together flour, baking powder, cardamom, and a pinch salt. Add cream and stir until mixture just forms a dough. Drop dough in 5 mounds on blueberry mixture and bake in middle of oven until biscuits are golden and cooked through, about 25 minutes.