Step 1 In a food processor, combine the flour and salt and pulse. Mix the oil and water together, and with the machine running, add the oil and water mixture and process to make a smooth, soft dough, about 30 seconds. Add more flour or water if necessary, until the dough pulls off the sides of the food processor and forms a ball around the blade. The dough should be soft and slightly sticky to the touch.
Step 2 Dump the dough onto a lightly floured work surface, and knead until very smooth, about 1 minute, sprinkling just enough flour so you can roll the dough into a smooth ball. Wrap the dough in plastic wrap, and set aside to let rest at room temperature for 30 minutes. (Dough can also be made a day ahead and refrigerated; let come to room temperature before rolling.)