Not really Italian, but still very good. You do need delicious, fresh tomatoes. Make something else if your tomatoes aren't nice.
2-3 fresh tomatoes, seeded and chopped
2-3 tbl fresh basil, chopped
1 clove garlic, chopped fine
1 tbl or to taste, balsamic vinegar
1 tbl olive oil, optional
salt, pepper, to taste
pinch of sugar if needed
Seed and chop tomatoes. (You can drain in a colander for a less messy appetizer, but I like to sop up the juice with french bread.) Add all remaining ingredients, except sugar. Taste and correct seasonings. Serve with sliced french bread.