How to make
Beat the eggs with the sugar and add the oil and yoghurt, which is mixed with the soda.
Then add the orange juice and grated peel. Finally, add the flour.
One third of the mixture is separated and mixed with the cocoa.
The muffin molds are filled and the cocoa mixture is added last.
The muffins are baked in a preheated oven at 390°F (200°C).
The two-tone muffins with orange and cocoa are ready.