NOTE: If you're not going to use Italian tuna (such as Pastene or Tonno), don't bother making this salad. It just won't taste right.
1, Drain off the oil that the tuna is packed in.
2. Place the tuna in a small bowl. Add the olive oil, and break up the tuna, mixing it together with the oil.
3. Add the chopped onion, celery, tomato, and olives, and vinegar.
4. Mix everything thoroughly.
Will make 2 or 3 sandwiches, depending on type and size of bread slices.
Submitted by: GUY MATTIA