A traditional Swedish spread consisting of a variety of fish, Swedish meatballs, pies, salad, egg, bread, cheese, potatoes and so on. Basically any food item could be a constituent of Smörgåsbord. The Colonel's Regiment were lucky enough to experience a breakfast smörgåsbord in 3 Stockholm.
'Smorgasbord' can also be used to describe a large array of similar items, which need not be food items. For example, if on the BBC coverage of the World Cup, the guests included Terry Venables, Bobby Robson and John Barnes, hosted by Gary Lineker, you might describe this as 'a smorgasbord of ex-England managers and players'.