Introduction The rice ball is a food that has been popular in Japan for a long time. It was made in Yayoi period for the first time but the rice ball of the modern is based on "tonjiki", which was made in Heian period. It is easy to carry and eat so it became widely eaten in Japan. Nowadays, It is not only a home-cooked dish, but It is often sold in convenience stores. In Addition, specialty stores of the rice ball have been established so the rice ball is growing in popularity overseas. I work part time at a specialty store of rice balls. The store sells variety of rice balls and they are delicious. One of them is the using bonito flakes (It is called"Katsuobushi" in Japan), so I began to wonder if I could make my original rice ball by adding something else. I tried a bacon and a cream cheese as a tasty ingredient to eat with the bonito flakes. You will need ・One rice cooker ・One frying pan ・One kitchen knife ・One chopping board ・One pair of chopsticks ・...