Pains aux Amandes

Sift the flour, ginger, cinnamon and allspice on to a marble slab and make a well in the centre. Pound the butter to soften it; then add it to the well along with the brown sugar and baking powder. Using the fingertips, quickly work the ingredients in the well until partly mixed. Gradually draw in the flour, pulling the dough into large crumbs. Knead the dough in three or four portions on the w