It's often the case that the batter is too thin. Otherwise, it's possible that it's overmixed or that the pan is too cold.
Also, don't use bread flour, if anything, prefer cake flour.
My recipe is:
140g flour
10g sugar
1/2 tsp baking powder
1/4 tsp baking soda
A large pinch of salt
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100g sour cream
220g yogurt (low fat)
(instead of the yogurt and sour cream, you can use 320g high fat yogurt)
1 large egg
1/2 tsp vanilla extract
Mix the dry ingredients together.
Mix the wet ingredients in a second bowl.
Sieve that dry mixture into the wet and fold until uniform, avoid overmixing.
Fry in a little butter over medium-high flame.
