Pour the flour into a bowl and make a depression in the middle. Warm 100 ml milk and 25 g sugar lukewarm. Crumble yeast into it and dissolve it. Pour it into the hollow and mix it with some of the flour to the pre-dough.
Cover and leave to rise in a warm place for about 15 minutes.
Warm 150 ml milk lukewarm. Add 50 g butter in flakes, egg, 50-75 g sugar, vanillin sugar and 1 pinch of salt to the pre-dough and knead everything smooth with a hand mixer. Cover and leave to rise for about 45 minutes.
Grease a fat pan (approx. 32 x 39 cm; at least 3.5 cm deep) and dust with flour. Wash, clean and quarter the strawberries. Dust the dough with some flour and roll out on the fat pan. Leave to rise for about 10 minutes.
Mix 200 g butter, lemon peel and lemon juice well in a high mixing bowl. Melt 50 g butter at low heat. Press hollows into the dough with two fingers at even intervals. Brush the dough with the melted butter, spread lemon butter in the hollows with a knife.
Spread the strawberries on the dough. First sprinkle almonds, then 100 g sugar on top. Bake in the preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for approx. 30 minutes. Cool down.