Note that fish day applied mostly to "commercial" kitchens: > This prompted Mikoyan to issue an order on the “introduction of a fish day at public catering est

Note that fish day applied mostly to "commercial" kitchens: > This prompted Mikoyan to issue an order on the “introduction of a fish day at public catering establishments.” It didn't have to be Thursday, but from that moment on, factory and other canteens began to serve fish one day a week (emphasis mine)