Boruto: Naruto Next Generations Episode 255 will air next Sunday, 3rd July!
Preview of the next episode (from the official website: https://www.tv-tokyo.co.jp/anime/boruto/episodes/):
Chocho and Inojin help Kumano Jingo, an ex-ninja and owner of a ramen shop, who they met on a mission to make ramen. Chocho and Inojin told him that the ramen was not bad, but that something was missing. In order to make the ramen more delicious, Jingo received advice from both of them and began to develop a new menu item that he was particular about, taking advantage of his background as a former ninja. Will he be able to create the perfect recipe he is aiming for?