A potato croquette is a deep-fried cylinder or oval of seasoned mashed potato, enriched with butter, milk, and sometimes egg, then coated in breadcrumbs and fried to a golden crisp. The contrast is the whole appeal: a shattering crust giving way to a fluffy, creamy interior. Variations stuff the centre with cheese, ham, or herbs, and the shape, traditionally cylindrical, distinguishes croquettes from rounder potato cakes. Technique determines success: the mash must be dry and well-seasoned, chilled firm before shaping, and double-coated so the crust seals instantly in hot oil without bursting. Served as a side dish, bar snack, or party bite, croquettes show the potato at its most indulgent, though the deep-frying makes them an occasional treat rather than everyday fare, with air-fried versions offering a lighter alternative.