While both a tuna sandwich and a tuna melt feature tuna as the main ingredient, there are some notable differences between the two.
A tuna sandwich is typically made with bread, tuna, and mayonnaise. Other ingredients, such as celery, onion, and pickle, can also be added to the tuna salad for extra flavor and texture. The sandwich is then topped with lettuce, tomato, and other condiments, such as mustard or mayonnaise, depending on personal preference. A tuna sandwich can be served cold or toasted.
On the other hand, a tuna melt is a hot sandwich that is made with tuna, cheese, and bread that is toasted or grilled. The tuna is usually mixed with mayonnaise and other ingredients, such as celery and onion, to make a tuna salad. The tuna salad is then placed on a slice of bread, topped with cheese, and broiled until the cheese is melted and bubbly. The sandwich is typically served hot, with the bread toasted and the cheese melted.
In summary, the main difference between a tuna sandwich and a tuna melt is that a tuna melt is a hot sandwich that is toasted or grilled with cheese, while a tuna sandwich is typically served cold or toasted, without cheese.