Ingredients:
4 yolks
8 g vanillin
30 g sunflower oil
Zest of one lemon
300 g Greek yoghurt
50 g flour
30 g cornstarch
4 egg whites + 1 pinch salt
1 teaspoon lemon juice
80 g sugar
Icing:
75 g powdered sugar
3-4 teaspoons lemon juice

Directions:

1. First mix the egg yolks with the vanilla, oil, yoghurt and lemon zest. Form a smooth, creamy mixture. Then add the flour and cornflour.
2. Separately whisk the egg whites with the salt and gradually add the sugar and lemon juice.
3. Combine the two doughs and mix well.
4. Pour into an 18 cm diameter mold.
5. Place the mold in another pan and fill with hot water.
6. Bake at 160 degrees for 60 to 70 minutes.