Mirepoix

Mirepoix is the French name (from the town) for a combination of onions, carrots and celery commonly used to flavor soups , stews and sauces, but it is not the only such combination, even in the French culinary repertoire.

Other combinations include onions, carrots, celery (both Pascal and celeriac[?]), leeks, parsnips[?], garlic, diced ham, tomatoes, shallots, mushrooms, peppers and chilis, and ginger are among the ingredients commonly referred to as aromatics.

They may be used in various combinations, as dictated by the cuisine and the dish itself.

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It is also an historic town in the Ariège department, in the south of France, between Carcassonne and Pamiers[?].