Combine flour and potato starch in large bowl. Toss cookies in mixture, shaking off excess. Set cookies aside.
Add water and salt to remaining flour mixture in bowl; mix well to form a batter.
Dip each coated cookie into batter, then into cracker crumbs. Fry in 340°F deep fryer 20 to 30 seconds per side or until desired color is reached. Drain on paper towels. Plate three warm cookies per serving.