In a large bowl, sift together the flour, cornstarch, sugar, and salt. Stir in the oil, egg whites, water, and vanilla. On a well-greased baking sheet, roll a very thin 4-inch circle of dough and bake for 15 minutes or until golden.
Remove one cookie at a time from the oven with a wide spatula; working quickly follow these four steps:
Flip cookie onto gloved hand.
Hold fortune in center of pliable cookie while folding cookie in half.
Grasp ends of cookie and draw gently down over edge of muffin pan or glass to crease at center of cookie.
Fit cookie in muffin pan (points down) to hold shape as it cools.
If cookie hardens too quickly, put it back in the oven for about 1 minute.