Confectioner's sugar Berner Heitisturm (Blueberries with cinnamon croutons and sour-cream ice-cream) ICE-CREAM: Bring water and sugar to a boil. Let cool. Stir in sour cream. Freeze. BLUEBERRIES: Remove the rind from the bread and cut the slices into small cubes. Heat half of the butter and fry the bread cubes until crisp; set the croutons aside. In the same pan heat the remaining butter until a light brown, stir in the flour and brown; let cool. Wash the blueberries. Combine croutons, sugar, cinnamon, heavy cream and browned flour, add the blueberries. Whip the cream until stiff and carefully fold into the mixture. SERVING: Place the blueberry mixture on plates. Scoop ice-cream with two hot tablespoons and place in center of the blueberry mixture. Sprinkle with blueberries, garnish with mint leaves and dust with confectioner's sugar.