Ratatouille is a traditional Provençal vegetable stew that is popular in Cannes and throughout the French Riviera. It is made with a variety of vegetables, including tomatoes, zucchini, eggplant, bell peppers, and onions, cooked in olive oil and seasoned with herbs like thyme and basil. Ratatouille is a versatile dish that can be enjoyed as a main course, a side dish, or even as a filling for sandwiches or omelettes. Its vibrant colors and rich flavors make it a delightful and healthy choice for a meal in Cannes.