Tsukishima Monja Moheji Ryogoku is a specialty restaurant in the food court in front of the sumo arena, visible right from the west exit of Ryogoku Station, serving monjayaki and okonomiyaki cooked on an iron griddle. Staff cook mentaiko cheese monjayaki, grilled squid, okonomiyaki, and yakisoba at the table in front of you. On weekends, you write your name and party size at the entrance and wait, and staff explain how to eat monjayaki. The food is good, but the portions are small by Tokyo standards.