Udon is surely “fast food of the country of chopsticks” and once you had it, you become its captive. The home-made udon at Rakugama has lots of fans, without a doubt.
Kamadama udon is their most famous item (chopped green unions and 2 uncooked eggs on top of udon). Udon can also be served with soy sauce, kitsune, half-cooked egg, pork ribs, etc.
You can also order tempura to come with your udon! Prices are relatively low (for Kamadama udon, 330 yen for a regular and 430 yen for a large).