Caponata is a Sicilian dish with eggplant, tomatoes, olives, and capers, known for its sweet and sour taste. From Provence, France, Ratatouille features eggplant, zucchini, and bell peppers, cooked with herbs for a distinct Mediterranean flavor. Both are vegetable dishes with unique ingredients and origins. You can consider caponata a sweet and sour Sicilian version of ratatouille.