Smoked Salmon and Egg Canapes

Name: Smoked Salmon and Egg Canapes
Total time: 20 min
Yield: 12 servings
Ingredients: 1/2 cup mayonnaise; 1 hard cooked egg finely chopped; 1 gherkins minced, small sweet pickles; 1 tablespoon scallion chopped, or chives; 12 pumpernickel slices cocktail-size; smoked salmon