In a salad bowl, mix olive oil, mint, lemon juice, salt and pepper.
To slice the tomatoes, use a serrated knife and cut them in half through the core end. Cut out the cores and slice the tomatoes into irregular chunks. Remove all the seedlings.
Place the tomatoes with the mint. Mix well and let rest at room temperature, allowing the mint to soak in the tomatoes. Add the thinly slices shallots, fold one more time and serve.
Giangi's Kitchen provides nutritional information, but these figures should be considered estimates, as a registered dietician does not calculate them.