Stir together flour, shortening, baking powder, and salt in a large bowl. Stir in water; mix until dough is smooth. Cover and let stand for 20 minutes.
Heat oil in a deep fryer to 375 degrees F (190 degrees C).
Roll dough out on a floured board until ⅛- to ¼-inch thick. Cut into 3-inch squares.
Fry dough squares in the preheated oil until golden brown on both sides. Drain on paper towels and serve hot.
