Halve the strawberries. Cut the rhubarb into 1 cm wide pieces. Mix the butter with vanilla pulp and 175 g sugar with a hand mixer until creamy. Mix in the eggs one by one. Mix the flour and baking powder and stir in with the yogurt.
Pour the dough into a greased, floured, round 26 cm springform pan. Mix the strawberries with the rhubarb and 1 tablespoon of sugar. Press half of the fruit approx. 1 cm deep into the dough. Spread the remaining fruits on the cake and bake the cake in the oven at 175 ° C for 45-55 minutes. Let the cake cool on the wire rack.