lol pierogi's are whipped potatoes in a thin pastry shell. They look like little half moons sorta. They come plain, or mixed with things such as cheese, onions, sour cream, etc. They also have dessert pierogi's...but I've never tried them before. Not a dumb question, I didn't know what they were up until about a year ago.
I have gotten them from lots of different places. They are in the frozen foods. I always get Mrs. T's. They are about 2-3 bucks a box, with about 4 servings per box. The detailed nutrition info is on thedailyplate, but they are around 150 per serving. They truly are delicious.