Cream butter with sugar.
Beat in lemon rind.
Combine flour, cocoa and cloves and add to butter mixture, mixing well.
Stir in nuts.
Roll the dough into long ropes, each 1/2 inch thick.
Cut into 2-inch lengths.
Place on a greased baking sheet.
Bake in a preheated 325Â° oven 15 to 20 minutes or until firm.
Cool on a cake rack.
Dip ends in chocolate, then into chopped nuts.