Conger eel, sea eel. The crustaceans and fish which form its diet contribute to its own good flavour. It is usually sold in steaks. It has few bones and good firm flesh with excellent flavour. The neck end has a better ratio of flesh to bone so is better for cooking as steaks, whereas the tail end, which is bonier, makes a useful addition to soups and stocks.
"Conger eel with milk", skinned, filleted and diced, baked with milk, onions and potatoes in south western France.