2 tb Cornstarch 1 1/2 c Sugar 1 tb Lemon juice 4 c Blackberries, picked over, r -nsed & drained well 1 c Flour 1 ts Baking powder 1/2 ts Salt 6 tb Unsalted butter, cold, cut i -to bits Vanilla ice cream In a large bowl, stir together the cornstarch an 1/4 cup cold water until cornstarch is completely dissolved. Add 1 cup sugar, lemon juice, and blackberries, and combine the mixture gently but thoroughly. Transfer to an 8-inch cast-iron skillet. In a bowl, combine well the flour, remaining sugar, baking powder, and salt. Blend in the butter until the mixture resembles coarse meal. Add 1/4 cup boiling water and stir the mixture until it just forms a dough. Bring the blackberry mixture to a boil on top of the stove, stirring. Drop spoonfuls of the dough carefully onto the boiling mixture, and bake the cobbler on a foil lined baking sheet in the middle of a preheated 400f oven for 20-25 minutes or until the topping is golden. Serve warm with vanilla ice cream. a 1989 Gourmet Mag. favorite