A yummy cheese appetizer for fans of pumpernickel bread. If you can't find the cocktail size loaves of pumpernickel (slices about the same dimensions as a cracker), just use regular pumpernickel bread and cut the slices into quarters. Number of servings assumes you use about 1 whole loaf, but you can make however many or however few you want. Sometimes I sprinkle with a little dill in place of the chives or use dill havarti. Amounts are approximate.