What are the components of mirepoix?

• A. Onions, carrots, and celery
• B. Tomatoes, garlic, and thyme
• C. Leek, potato, carrot
• D. Bell pepper, onion, celery

Answer: (B)

Mirepoix is the French flavor base built from onions, carrots, and celery. Each component plays a role: onions give sweetness, carrots add color and mild sweetness, and celery provides aroma and depth. They’re usually diced small and sweated in fat to release their flavors without browning, forming the foundation for stocks, soups, and sauces.

That combination is what defines mirepoix. Other pairings introduce elements not part of the traditional trio—herbs or single aromatics like thyme, garlic, or tomatoes alter the flavor in ways that aren’t characteristic of mirepoix. Variations in other cuisines may use different vegetables (for example, the holy trinity of bell pepper, onion, and celery in some traditions), but those aren’t mirepoix.