Tiella di riso, patate e cozze is a layered dish consisting of rice, potatoes, mussels, onions, and tomatoes which are seasoned with olive oil, salt, parsley, pepper, and garlic. Originally from the city of Bari, this rich and fragrant dish with a crispy golden crust is very popular throughout Apulia.
Additional ingredients such as various seasonal vegetables, breadcrumbs, or Pecorino cheese may be used, and variations of the dish use different types of seafood.
Tiella is also the name used for a round terracotta pan in which this dish is traditionally prepared, and depending on the area, ingredients that are used in tiella change - that explains why in some Italian regions a tiella is a type of focaccia, with or without a filling, and in others it is a stew or a layered casserole made with or without a crust.