When corned beef or ham is chopped for a filling, the sandwich is much improved by a dash of mustard; Worcestershire or horseradish sauce improves a filling of roast beef or boiled tongue; while chopped capers, tomato sauce, catsup or a cold mint sauce is appropriate in sandwiches made of lamb; celery salt, when the filling is of chicken or veal, and lemon juice, when the principal ingredient is fish, are _en rapport_.
The flavor of a few drops of onion juice is relished by many in any kind of fish or meat sandwich, while others would prefer a few grains of fine-chopped parsley.
When salad sandwiches are to be prepared, chop the meat or fish very fine and mix it with the salad dressing.

Celery, cabbage, cress, cucumbers, tomatoes or olives may be chopped and added to the meat with the dressing.

When lettuce is used, the leaf is served whole, the edges just appearing outside the bread.

Any one of these vegetables, combined with a salad dressing, makes a delicious sandwich without meat or fish.
When desired, other well-prepared sauces may be used in the place of salad dressings.

Fillings of uncooked fruit may be used; but, in the case of dried fruits, it is preferable to stew until tender, after the fruit has been finely chopped.