The Marukin Soy Sauce Museum occupies an old factory in the island's soy-sauce quarter, where blackened timber warehouses still give the lanes a working, fermented smell. Exhibits explain the brewing process without taking too long over it.
The best part is the setting. This is one of Shodoshima's clearest links between landscape, trade, and taste, and it is worth pairing with a walk through the nearby warehouses.