Here's a recipe for the famous Mrs. Stahl's Potato Knishes. They've been around for many, many years, are located in Brooklyn, New York, and are very well known for their great knishes.

MRS. STAHL'S KNISHES
Yield: 8 servings

2 c flour
2 tbsp oil
1 tsp baking powder
2 eggs
1/2 tsp salt
4 tbsp water

FILLING:
3 tbsp vegetable oil or chicken fat
2 c plain mashed potatoes
2 c finely chopped onions
Pinch salt and pepper to taste

TO MAKE THE DOUGH:
Combine flour, baking powder and salt in large bowl. Make well and add 1 T of oil, eggs and 2 tablespoons water. Gradually mix wet ingredients to flour. Knead dough until ball is formed. Knead dough, place in oiled bowl, Let stand Covered for 1 hour.

Preheat oven to 350 deg. Other 2 T of oil and cook onions until tender, add salt and pepper to taste. Mix filling ingredients in bowl. Roll out dough and divide into thirds on a floured surface. Roll dough in jelly roll fashion and fill with mixture. Cut into knish size and bake for 40 minutes, until golden brown.

NOTE: Unbaked or baked knishes can be frozen and baked or reheated. Do not defrost. Unbaked knishes take about 45 minutes, baked 15 to 20 minutes.)