PURPOSE: To obtain the titled food having delicious taste and excellent preservative effect and suitable for picnic lunch, etc., by treating short-necked clam by a specific method, separating seasoned extract from the short-necked clam, sprinkling steamed glutinous rice with the extract, forming the rice and wrapping with a bamboo sheath.

CONSTITUTION: Shelled short-necked clam is washed with water, put into a liquid prepared by heating a liquor containing salt and boiled for several minutes to remove the harshness. Roasted tangle and light-colored soy sauce are added to the soup and the tangle is removed with a filter to obtain an extract. Steamed glutinous rice is sprinkled with the extract, stirred to adjust the taste, mixed with ingredients, formed in proper form and wrapped with a sterilized and dried bamboo sheath to obtain the objective food.