"Pierogi were traditionally served as a meatless dish during Lent, but evolved into a popular side dish. Pierogi bob to the surface of the cooking water when they're done...."
INGREDIENTS
•
1 large egg
•
2 tablespoons sour cream
•
1 cup milk
•
1 cup water
•
4 1/2 to 5 cups all-purpose flour, plus more for dusting
•
5 pounds (about 10 medium) baking potatoes, peeled and quartered
•
12 tablespoons (1 1/2 sticks) unsalted butter, melted
•
2 ounces cheddar cheese, (about 1/2 cup), grated
•
4 ounces cream cheese
•
Coarse salt and freshly ground pepper
•
2 tablespoons cornmeal