By whisking the egg whites, these American pancakes become incredibly fluffy.

Melt 30 g of butter and let cool slightly.
Separate the egg yolk and egg white from 1 egg, and then mix the egg yolk, 1 dl of milk, and 2 dl of yogurt in a bowl.
Add the melted butter while whisking.
Beat the egg white until fluffy and then fold into the other mixture.
Add 150 g of pancake mix and mix gently.
Fold about 85 g of the blueberries into the mixture.
Heat butter in a frying pan over medium heat, and spoon out batter, fry for about 2-3 minutes per side.
Top with the remaining 40 g of blueberries, dust with powdered sugar and serve with maple syrup.