Flour Tortillas 2 cups flour 1 cup water 1/2 tsp. salt 2 Tbsp shortening Mix and knead for 5 minutes. Let rest a few minutes. Pinch off about a half-dollar size piece and, on a floured surface, roll flat with a rolling pin until 1/8" thick. Hint: Each time you roll the pin over the tortilla, gently pick it up and turn it; this gives it the roundness. Also, make sure you are working on a floured surface and keep your rolling pin floured.