The habit of adding some cowberry jam to a large piece of meat should be indeed regarded as a high achievement of Scandinavian civilization. I suppose Slavic people (especially Polish) learned it from here.
All kinds of Swedish beer I have tried here are just very good. Nothing more to say about it. For me, Swedish beer is next only to Danish. However, I might be biased.
Coffee is, unfortunately, extremely poor here, even in coffee shops. There must be something in Germanic heritage that prevents Swedes from making a decent coffee.