There's a a great gyoza (dumpling) restaurant near Minami Asagaya, Nakayoshi, which does Hakata tetsunabe gyoza. Basically this is a style of gyoza in Fukuoka that cooks dumplings in a metal pan (see above). It is also unusual in that the fillings are mostly nira (leek), garlic, and trace amounts of pork I think. It was very popular with a high turnover on a Sunday. It seems this is the only branch outside of Fukuoka. It's just down the street, so I'm sure I'll be back.