A binding agent such as wheat flour, yam, eggs, glue plant (G. furcata) or Synurus pungens is often added to the buckwheat flour mixture for viscosity necessary to form dough.
粘り気を出すためのつなぎとして、小麦粉やヤマノイモ、玉子、フノリ、オヤマボクチなどを混ぜることが多い。