Sandwiches de miga are popular food items in Argentina where they are typical tea-time food. They are single or double layered sandwiches, made from a thin white bread without crust, i.e. the part of the bread called "miga". They are filled with thinly sliced meat (especially but not limited to ham), eggs, cheese, tomatoes, green peppers, lettuce, and sometimes other vegetables, even asparagus. Mayonnaise is another important ingredient. They can be toasted or untoasted.
Instead of making them from scratch, most Argentines simply buy them at the local bakery.