1Heat ungreased krumkake iron over medium-high heat on smallest surface unit of electric or gas range (for electric irons, follow manufacturer's directions). Beat all ingredients until smooth. Test iron with a few drops of water; if they skitter around, iron is correct temperature.
2Lightly brush inside top and bottom of iron with shortening or vegetable oil. Drop 1/2 tablespoon batter onto iron; close gently. Cook about 15 seconds on each side or until light golden brown. Keep iron over heat at all times. Remove cookie with knife. Immediately roll cookie around roller or handle of large wooden spoon. Cool on wire rack.