The dishes are all indigenous to the region and not known in Fujian itself, although they are all thought to have descended from lor mee (卤面), a staple of Fujianese cooking.The key to the dish is copious quantities of an aromatic broth made from prawns and pork bones, slowly simmered for many hours.Sambal chilli and calamansi limes are served on the side for the diner to blend in, giving it an extra zing and tanginess.It primarily consists of rice vermicelli and thicker yellow egg noodles, while the broth is made with prawn heads and shells, and pork ribs.The dish is also usually served with freshly cut red chili slices in light soy sauce and lime juice.