Solomon Grundy[by folk etymology salmagundi, perhaps influenced by the nursery rhyme about Solomon Grundy] N.S.
pieces of salted herring marinated in vinegar, pickling spices, and onions.
1959  [Lunenburg] is continentally famous for its cooking and for its dozens of local recipes, including solomon gundy, hedge podge (cooked mixed fresh vegetables), dandelion beer, krishelo (patties made from curds, cream and caraway seeds). . .
1964  There's another good herring dish, too, called Solomon Grundy, which I've never eaten outside Nova Scotia.