Prepare everything you need.
Wash the orange well, dip it in boiling water for a few seconds to remove the wax that fruits are often treated with. Grate the orange zest and squeeze the juice from the pulp. It turned out to be 100 milliliters. Break the eggs into a bowl, add sugar and salt.
3 pcs egg, 130 g sugar, 1 pinch salt
Mix with a mixer or a hand whisk until lightened and doubled in volume. Melt the butter, let it cool and pour it into the bowl.
100 g butter
Add the orange zest and juice to the bowl.
1 pc orange
Mix well, sift the flour and baking powder.
180 g flour, 1 tsp baking powder
Using a mixer, achieve a uniform smooth dough that will flow from the whisk in a thick ribbon.
Line the bottom of the baking dish, here the diameter is 20 cm, with parchment paper. Grease with butter and spread the dough. Gently tap the form on the table to evenly distribute the mass.
Bake the citrus cake in the oven at 170 ℃ for 30 minutes. A wooden stick should come out of the center dry. The cake is ready. It is soft, fragrant, slightly moist. If desired, sprinkle with powdered sugar.