Major Japanese snack maker Calbee began selling its Kappa Ebisen shrimp crackers in black-and-white packaging this week in Tokyo, a move in response to uncertainty over supplies of oil-derived naphtha stemming from the Middle East conflict.
At a supermarket on Monday, the monochrome Kappa Ebisen bags - stamped with the words "oil-saving package" - appeared on the shelves alongside snacks in colorful packaging.
