Piroshky (or pirozhok—but not to be confused with pierogi) are the Russian version of an empanada, calzone, or any other stuffed hand-held pie. Common fillings include poppy seeds, sausage, cabbage, or whatever else the babushkas over the years had lying around.
At Piroshky Piroshky in Seattle's Pike Place Market, they add a Pacific Northwest twist with a version that rolls up smoked salmon pate ($4.50). The dill-flecked dough pocket is filled with the soft fish paste. They also have plenty of sweet flavors, like the Apple Cinnamon Roll ($3.70) or Fresh Rhubarb Piroshky ($3).
There don't seem to be any rules on the piroshky shape. Some come in triangles, others in braids, and the most fun to watch through the window—the cinnamon roll-like spirals. Walk by at the right time and you'll see someone on rolling duty. There are also no rules on when to eat them. It's not meal-specific, so basically it's always piroshky time.
1908 Pike Place, Seattle WA 98101 (map)