How to make
Dissolve the yeast in some warm milk with a little flour and 1/2 tsp sugar. Allow to activate for about 20 minutes. All other items should be slightly warm (kept at room temperature, not in the refrigerator).
Sift the flour and pour the yeast in a well in the middle, add the remaining milk, sugar, salt, butter, oil, eggs and knead dough slowly by adding vanilla and grated lemon rind.
Knead patiently and repeatedly until the dough starts to lift off the dish or countertop. Form a ball and let it rise in a warm place for exactly one hour. The original recipe calls not to let it stand a second longer. Then shape it into the desired cake shape - shallow, oval, etc. Put it in a greased container to bake in a preheated oven at 430°F (220 °C) for about 20-30 minutes.
Optionally, brush it with beaten egg yolk and sprinkle with granulated sugar and sesame seeds, nuts, or pastry sticks. Inside the cake, you can put other extras - raisins, chocolate chips, etc.