Knishes Recipe

Ingredients

• The Dough:
• 1 egg
• 1/4 cup salad oil
• 3/4 cup water
• 1 teaspoon distilled white vinegar
• 2 3/4 cups all-purpose flour
• Potato Onion Filling:
• 4 large onions, peeled and finely chopped
• 1/4 cup butter
• 1/4 cup rendered chicken fat
• 3 1/2 pounds potatoes,peeled
• Salt and freshly ground black pepper to taste
• Cheese Filling:
• 2 large yellow onions, peeled and chopped
• 4 tablespoons butter
• 12 ounces cream cheese, cut up
• 2 1/4 pounds dry-curd cottage cheese or farmer cheese