Lina Wachtelborn Meier, The Art of German Cooking and Baking… (1922)
“ The meat of the fish must be firm and must not show any form of decay, neither in smell nor taste. The skin must be tight on the fish. Both eyes must be clear, not milky or sunken. The gills must be red and slimy. Fish frozen very hard are not especially good. The meat of middle sized fish is more savory than that of large ones. When you buy live fish, take the lively ones, not those that swim on their side or back. The bought fish are best killed in the market. The quickest way of killing a fish is to stun it with a blow on the head or neck, then cutting, its throat and its tail. ”
