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Thickener for gravies and sauces is a culinary technique or ingredient used to add body and consistency to liquid-based dishes, rather than a standalone dish itself. Common thickeners include flour, cornstarch, arrowroot, or roux (a cooked mixture of fat and flour), which are blended into stocks, broths, or pan drippings to create smooth, rich gravies and sauces. This method is foundational in many cuisines, particularly in Western cooking like French and American traditions, where gravies accompany roasts, mashed potatoes, and other savory meals.
Thickeners are typically high in carbohydrates from starches like flour or cornstarch, with minimal fat or protein unless a roux is used. They provide quick energy through carbs and small amounts of iron or B vitamins if enriched flour is used, but are generally low in other nutrients. A typical serving (about 2 tablespoons) of a basic gravy thickener adds roughly 30-50 calories, depending on the ingredients and preparation.
Culturally, thickeners like roux are a cornerstone of French cuisine, where the color of the roux (from white to dark brown) defines the flavor and appearance of classic sauces. Nutritionally, using alternatives like cornstarch or arrowroot can make gravies gluten-free, catering to modern dietary needs while maintaining traditional textures.