Kalles Kaviar is creamed smoked cod roe and is usually enjoyed on buttered Swedish crispbread, toast, or Ritz crackers, or you can pair it with dill and chive omelets, sandwiches, or hard-boiled eggs. Chef Marcus Samuelsson told Yahoo! that he enjoys it on scrambled eggs, and in an interview with Time Out, he says he also puts it on avocados.