The primary ingredient in a traditional ratatouille is eggplant, also known as aubergine. Ratatouille is a classic Provençal dish from France showcasing a medley of summer vegetables, typically including zucchini, bell peppers, tomatoes, and onions, alongside herbs like thyme and basil. While many variations exist, eggplant is considered essential for the dish's characteristic texture and flavor. Ratatouille is often enjoyed as a side dish or served as a main course, and it can be prepared in various ways, including sautéing the vegetables or baking them together. This dish is celebrated for its hearty, fragrant qualities.