What is the recipe for pierogis?

In international cuisine, the contents of pierogies (or perogies) are often influenced by the local culture or taste. Most often pierogies contain either a mashed patato mix, mushroom and/or sauercraut or perhaps a cheese filling. They are boiled until the dough is cooked and then fried in butter, with breadcrumbs if you wish, in order to flavour the dough to accompany the taste of the filling.