soffritto (italian)

A mirepoix ( meer-PWAH; French pronunciation: [miʁˈpwa]) is a flavor base made from cooked, diced vegetables, usually with butter, oil, or other fat, for a long time on a low heat without coloring or browning, as further cooking, often with the addition of tomato purée, creates a darkened brown mixture called pincage (French: pinçage). It is not sautéed or otherwise hard cooked, because the intention is to sweeten the ingredients rather than caramelize them. It is a long-standing cooking technique in French cuisine.
When the mirepoix is not precooked, the constituent vegetables may be cut to a larger size, depending on the overall cooking time for the dish. Usually the vegetable mixture is onions, carrots, and celery (either common 'pascal' celery or celeriac), with the traditional ratio being 2:1:1, two parts onion, one part carrot, and one part celery. Mirepoix is the flavor base for a wide variety of Western dishes: stocks, soups, stews and sauces.
Similar flavor bases include the Italian soffritto, the Spanish and Portuguese sofrito/refogado (braised onions, garlic and tomato), as well as the Turkish variation with tomato paste instead of fresh tomato of the eastern Mediterranean/Balkan region, the German Suppengrün (leeks, carrots and celeriac), the Polish włoszczyzna (leeks, carrots, celery root and parsley root), the Russian/Ukrainian smazhennya or zazharka (onion, carrot and possibly celery, beets or pepper), the United States Cajun/Creole holy trinity (onions, celery and bell peppers), and possibly the French duxelles (mushrooms and often onion or shallot and herbs, reduced to a paste).

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