They are filled with thinly sliced cold cuts (especially ham), hard-boiled eggs, cheese, tomatoes, bell peppers, tuna, lettuce, and sometimes other vegetables such as asparagus. Butter or mayonnaise is another important ingredient.
These sandwiches contain finely cut cold cuts (primarily ham), hard-boiled eggs, cheese, tomatoes, bell peppers, tuna, lettuce, and occasionally additional vegetables such as asparagus. Butter or mayonnaise is also a key component.