Plava Laguna (5900 N. Kings Highway) seems to be the companion store to the now defunct Restaurant Cosmopolitan. The restaurant is actually reopening in a few weeks as a more modest carry-out next door.
Plava Laguna has a capital selection of sausages, all clearly labeled, though not necessarily in English, as well as all sorts of jarred and canned goods from the Balkans area, and some interesting soft drinks, including the Slovenian soda Cockta.
Candy fetishists should note that Plava Laguna easily has the most extensive array of Milka chocolate bars in the area, a respectable collection of Kinder chocolates, and is the only D.C. area source (that were aware of, at least) offering a nearly complete product line of the Croatian chocolate maker Kras.
A more expansive and detailed report along with a couple of photos can be found at the link below.