Separate the eggs into whites and yolks. Beat egg whites until stiff peaks form.
Add sugar and yogurt to the egg yolks and mix until foamy with a hand mixer. You can also use Greek yogurt instead of regular yogurt.
Add the flour and at the end carefully mix in the snow from the egg whites.
Pour the dough into fireproof containers, and add pitted cherries to it at the end. Other fruits can be used instead of cherries, e.g. blueberries or raspberries.
Bake in a heated oven at 190 °C for about 40 minutes.