Photo/IllutrationMcDonald's Japan is accused of misleading customers in its TV commercials for the “Tokyo Roast Beef Burger” sold in summer 2017. (Provided by McDonald's Japan)

McDonald’s Japan has been reprimanded by the Consumer Affairs Agency for misleading customers in advertisements containing false representations of two products it sold for a limited period last year.

The agency issued the fast food giant with an order on July 24 to take measures to prevent a recurrence. It accused the company of violating the law against unjustifiable premiums and misleading representations, which prohibits displaying products in a way that could mislead customers.

The misrepresentations in question concern the “Tokyo Roast Beef Burger,” “Tokyo Roast Beef Muffin” and their associated set menus that were sold in August and September 2017.

TV commercials showed pictures of genuine roast beef slices, implying they were all that was used in the burgers as "roast beef", but in reality more than half of the slices used were from processed and reformed meat.

McDonald’s was quoted by the agency as saying that it chose the method to produce the burgers after a trial because it increased their meat content, and it enabled their mass production.