Combine flour (both), sugar, baking powder, vanillin, and a pinch of salt in a large bowl.
Pour melted coconut oil and milk into a bowl.
Stir until smooth. You can beat the dough with a mixer. The consistency should behomogeneous and liquid enough.
Preheat a skillet over medium heat. Pour two tablespoons of dough into the center. Wait about 30 seconds for the dough to set. Turn gently and fry for about the same amount. Repeat the previous step until the dough runs out.