What is the main ingredient of ratatouille?

The main ingredient in ratatouille is eggplant. However, other vegetables such as sweet peppers, tomatoes, zucchini and onions are also cooked in the dish. Other ingredients include herbs and olive oil.

Ratatouille is thought to have originated in Nice, so it is filled with vegetables that thrive in the warm, Mediterranean climate. Because of its origins, the full name of ratatouille is ratatouille niçoise.

Ratatouille is believed to be a modern dish, because its ingredients of eggplant, tomatoes and zucchini were unknown to Europeans before the 17th century. However, it might have evolved from a Basque dish that was made from mutton and potatoes.