Sift together flour, sugar, cornstarch and salt. Add oil and egg white and stir until smooth. Add water and mix well. Make 1 cookie at a time by pouring one Tbs of batter into lightly greased skillet, spreading batter to a 3 1/2 inch circle. cook on low heat for 4 minutes or until lightly browned. Trun and cook one minute longer. Working quickly, place cookie on a paper towel, place fortune in center and fold cookie in half. Then bend cookie over the edge of a bowl to form boomerang shape. place each in muffin tin cup to cool. Makes 8 cookies.