In a large bowl, beat eggs. Add the brown sugar, cloves, cinnamon and pepper. Combine the flour, baking soda and salt; gradually add to the egg mixture. Stir in raisins and walnuts. Drop by tablespoonfuls 2 inches apart onto lightly greased baking sheets. Bake at 400° for 8-10 minutes or until surface cracks. Remove to wire racks to cool.