Asakusa Mugitoro Honten

Mugitoro was founded in 1929 on the western foot of Azumabashi (Azuma Bridge), where the Sumida River turns north past Asakusa. The dish that gives the restaurant its name — mugitoro-gohan, grated mountain yam ladled over a bed of barley rice with seasonal small dishes — is one of the oldest preparations in Japanese cooking, dating to the Edo period as a high-protein, easy-to-digest meal for travelers, monks, and recovering patients. The Asakusa version has been refined by the same family for nearly a century.

What makes the dish worth tracing back to one specific restaurant is the yam itself. Mugitoro uses jinenjo (natural mountain yam) sourced from selected farms, grated by hand in the kitchen rather than processed, which results in a thicker, stickier, more aromatic tororo than the standard supermarket version. The texture is more like batter than puree, and when it's mixed with soy and dashi at the table, it pours over the barley rice in slow ribbons. Most Tokyo residents who've grown up with grocery-store tororo come here once and recalibrate their reference for what the dish can be.

The building is part of the appeal. Six floors fronting the river, with the rooftop converted into a buffet-style dining room (the 'Sky Tororo Buffet,' reservation only) and lower floors used for traditional tatami-room service. The view from the rooftop crosses the river to the Asahi Beer Building and Skytree — the most Tokyo view a postcard could ask for, framed in a way that's been there since Skytree opened in 2012.