A classic street food cart, herring-specialist Strömmingsbaren has  a cult following. And rightly so, as the food is delish. Most diners get "the classic", a helping of herring on crisp bread (knäckebröd) with dill sauce. Others opt for more creative variations like strömming which is mashed potatoes, on black rye bread, rolled up in flatbread, or—have they no shame?—tucked into a burger bun. Customers can customize their noshes with lingonberries, dill sauce, or pickles. Any which way, you're likely to have a more genuine Stockholm experience than most tourist traps nearby can provide, and at a tenth of the cost.