Preheat the waffle iron. Separate the eggs. Mix the flour, sugar, baking powder and salt. In a second mixing bowl, whip the egg yolks with milk, butter, the Styrian Pumpkin Seed Oil P.G.I. and the vanilla sugar. Add the dry ingredients and blend until a smooth batter. Beat the egg whites until they form stiff peaks and fold in the batter carefully. Bake golden brown waffles with the waffle iron. Tip: Serve the waffles with vanilla ice cream, whipped cream and some chopped caramelized pumpkin seeds as well as some drops of Styrian Pumpkin Seed Oil P.G.I..