In mirepoix, which vegetables constitute the traditional trio?

• A. Onion, Celery, Carrot
• B. Potato, Carrot, Onion
• C. Tomato, Onion, Garlic
• D. Leek, Mushroom, Carrot

Answer: (A)

Mirepoix is a flavor base built from aromatic vegetables cooked gently to release their flavors. The traditional trio is onion, celery, and carrot. Onions provide sweetness and depth, celery adds fresh aroma, and carrots contribute earthiness and additional sweetness. When diced evenly and sweated in fat, these vegetables soften and meld to form a balanced foundation for many sauces, soups, and braises. Potatoes introduce starch, tomatoes alter acidity and color, and garlic or mushrooms appear in other flavor builds, but they are not part of the classic trio.