Berries Striped Pie

	Unleash flour with salt on the working surface, adding chopped butter and kneading for 10 minutes. Then add 3 tablespoons of sugar and sour cream. Knead the dough until smooth and elastic. Form into a ball, wrap in film, and place in the refrigerator for 2 hours.
	Preheat the oven to 180°C. Prepare a baking sheet, covering it with a non-stick mat - no greasing is required. Roll out the dough on the baking sheet using a mini-roller, shaping it into a large isosceles triangle, from the center to the edges, so the sides are thicker. Form neat edges about 3 cm high (they will settle a little when baked). Place dried beans or beans inside the triangle and bake for 20 minutes. Remove the crust, remove the beans, and adjust the edges.
	Prepare the berries, sort and wash them, laying them on paper towels to dry. Cut balls from the apple with a round cutter.
	Dissolve the starch in 4 tablespoons of water, add powdered sugar, and mix thoroughly. Use the resulting paste to coat the baked pie crust with a silicone brush.
	Lay the berries and apple balls on the crust in rows, alternating colors. Remove to the refrigerator for 1 hour.
	Using a mesh sieve, evenly sprinkle the pie with powdered sugar.