Puff pastry pies with frozen berries

1. We take the puff pastry out of the refrigerator, if it is frozen, then it is necessary to let it defrost, leave it on the table for about an hour.
2. We also take out the frozen berries and shift them through a sieve, so that during this time the excess juice will stack. Once thawed, we fill it with sugar, put it to your liking, it all depends on the berries.
3. Roll out the dough and cut into squares, put frozen berries mixed with sugar in the center. If there is a lot of juice in the berries, you can add starch, then when baking, the juice will thicken and will not flow out. We fasten the edges of the pies well, and lubricate with whipped yolk, for a golden color.
4. Grease the baking sheet with a piece of butter and sprinkle with water, when the liquid begins to evaporate, the dough will rise better.
4. We put it to bake in a well-warmed oven, at a temperature of 200 degrees for a quarter of an hour.