Mix the flour, milk, eggs and oil into a dough and let it soak for 30 minutes.
Line a baking sheet with parchment paper, spread the dough on top and bake in a preheated oven at 250 ° C for 10-13 minutes. It doesn`t matter if the pancake isn`t quite even or has cracks on the edge.
Mix the cream cheese, horseradish, dill, crème fraiche, salt and pepper and spread half of it onto the pancake. Place the smoked salmon in slices on top. Retain 2 tablespoons of the cheese mixture, spread the rest on top, roll up the pancakes. Brush with the rest of the cheese mixture and garnish with dill. Chill in the refrigerator for at least 30 minutes, then cut into 1-2 cm thick slices and serve.