A French mint chocolate bar in a biscotti rendition. A slick of melted white chocolate makes these holiday festive. Minced up peppermint patties in the dough add to the glamor. If you cannot find great white chocolate (which melts well) or melt white chocolate easily (it is tricky and you must do this slowly), then use white chocolate confectioner's discs, available at culinary stores. These look like white chocolate but taste rather bland. However, they melt easily. You can also use dark chocolate for the special coating.