There's a cafeteria at the Abashirishi Prison Museum in northern Japan. There you can eat just like a convict. Rocket News 24 sentenced a correspondent to visit and report back:
Perhaps Kuzo’s biggest apprehension was just how the food would taste. Being prison food, it’s hard not to hold the preconception of things being a little on the bland side. However, to his surprise, the meal was not wanting in flavor, with the sweetness of the Japanese radish complementing the rice and the aroma of the mackerel creating a taste-bud explosion. [...]
The mackerel on offer here is garnished with grated Japanese radish which complements the mackerel superbly. To make an already delicious meal even more tantalizing, sprinkling a little soy sauce on the fish and taking a mouthful along with the rice really does give the meal a sophisticated edge.