You've never made such a berry pie before. Mixed berry pie with homemade shortcrust pastry

Are you tired of the same type of pies with a lattice or a crumb on top? Just top this deep pink pie filling with a sponge cake batter for a showstopping end to a special will be amazed! ! Please turn on CC and select your preferred language! 00:00 - Intro 00:10 - Pie Crust Recipe All-purpose flour - 150 g Baking powder - 3 g Salt - 2 g Unsalted butter - 90 g Granulated sugar - 30 g Sour cream - 40 g Egg yolk - 1 pc. 3:55 - Berry Filling Recipe Granulated sugar - 70 g Cornstarch - 15 g Frozen mixed berries - 300 g 4:59 - The top layer of pie 1 whole egg 1 egg white Granulated sugar - 35 g All-purpose flour - 40 g Notes: - Rectangular tart pan - 10x35x2 cm. If you don't have a rectangular tart pan, you can use a 20-22 cm round tart pan. - Use any berry mix that you like. And depending on the mix, add more or less sugar. - 5-7 minutes before the end of baking the pie, start preparing the top layer fo