Sort blueberries. Put them in a bowl and pour maple syrup and lime juice over them. Leave to stand in a cool place. In the meantime melt the fat in a small pot. Let it cool down a bit. Pour eggs, vanilla sugar, sugar and salt into a mixing bowl and whisk until thick and creamy (10-12 minutes). Add fat and buttermilk and stir in.
Mix flour and baking powder, sieve onto the egg-buttermilk mixture and stir in. Heat up the clarified butter in portions in a coated pan, add 3 blobs of dough and bake on each side at medium heat until golden brown. Remove from the pan and keep warm. Bake the rest of the pancakes in the same way. Dust the pancakes with icing sugar and serve them decorated with mint as desired. Add blueberries decorated with slices of lime in a small bowl.