it's smooth. Divide dough evenly into 12 portions. Shape each portion into a ball. Place balls onto lined tray, about 1cm apart. Cover with plastic wrap. Set aside in a warm, draft-free place for 30 minutes, or until buns double in size. Preheat oven to 375F (190C). Time to make the flour paste. Mix the flour and water together in a small bowl until smooth, adding a little more water if paste is too thick. Spoon the paste into a small snap-lock plastic bag. Cut off 1 corner of bag with scissors. Pipe a thin cross over the top of each bun. Bake buns for about 20 to 25 minutes, or until buns are golden brown. Make the glaze. Place water and sugar into a small saucepan over low heat. Stir continuously until sugar dissolves. Bring to the boil for 5 minutes. Keep an eye on the mixture so that it doesn't burn. Brush hot sugar glaze over warm buns. Serve hot cross buns warm or at room temperature.