Prepare warm, but not hot water, remove the egg from the refrigerator so that it is at room temperature. Wash the mint and divide it into sprigs of 2-3 leaves each. Pour boiling water over the raisins and soak in hot water for several minutes. Wash the apples, peel them from the core and seeds, cut them into cubes. Pour the juice of half a lemon over the apple slices to prevent them from browning. Prepare cling film and baking paper. Sift the flour. Tip: baking flour must be sifted to saturate it with oxygen and make kneading easier. Instead of sifting, you can vigorously stir the flour with a whisk or fork.
Mix egg, salt, vinegar and vegetable oil in a container. Add water and mix everything. Add flour in small portions, stirring constantly until the mixture thickens. Add baking powder to the mixture and knead the dough until it becomes dense, homogeneous and pliable. Roll the dough into a ball and wrap in cling film. Leave for about 30 minutes.
Add raisins to the container with chopped apples, after draining the water in which they were soaked. Add sugar and cinnamon to the mixture and stir well.
Place the dough on the table, having first sprinkled a little flour on the surface or greased the table with vegetable oil. Spread the dough on the table to form a flat rectangular cake and stretch it from the center to the edges to form a thin layer.
Melt the butter and brush the dough plate with it. Spread the apples and raisins evenly over the dough and fold the edges in slightly. Roll up the strudel and seal the longitudinal edge of the dough.
Line a baking tray with baking paper and carefully place the strudel on it. Bake at 200 degrees for 20-30 minutes until the dough is golden brown. Cool the strudel, brush with butter and cut into pieces for serving.
Usually in coffee shops apple strudel is served with a small scoop of vanilla ice cream. But the taste of baked apples with cinnamon will be perfectly emphasized by fresh strawberries with whipped cream. Place portions of strudel on dessert plates, make a mound of whipped cream next to the baked goods, place a few strawberries and a sprig of mint on it.