Put flour on a pastry board, make a little hole and pour into it a large spoonful of fresh cream and a pinch of salt, then knead so as to absorb the greatest amount of flour possible.  Spread out the paste with a rolling-pin until 2 mm. thick.  cut it in squares, sprinkle the surface with sugar rubbed before hand on a lemon.  Put in a slow oven.  As soon as the paste takes a brown color, take it out.