The dish is thickened with stale bread instead of flour, a trick that dates back to when Valparaíso's dockworkers couldn't afford to waste a single crumb.
Shredded crab meat is baked in a creamy casserole of bread, milk, cheese, and paprika until the top turns golden and bubbling. Market cooks near Valparaíso's fish auction sell it by the ramekin, still steaming.