Nikujaga — that's meat and potatoes stewed in sweetened soy sauce, isn't it? It was invented by naval chefs in the 19th century.

[Thank you, Wikipedia-san. Don't mind her as she just sort of finishes dusting herself off, and Chief nonchalantly floats the bags over toward Naegi at a leisurely pace.]

No, I've never had it, actually. My visits to Japan usually prompted a somewhat more...commercial fare.