Here's the recipe so you can make some too~:

1 can of tuna
1 whole tomato
toasted bread slices (preferably wonder bread)
pinch of salt
lemon juice and mayo*

*add mayo and lemon juice to your preference

In a small bowl mix together tuna, chopped tomatoes, mayo and lemon juice. And once you mix it, add it to your toasted bread slices to make a delicious sammich!