The burger had a special cheese croquette with corn from Chungju.

Some customers said they found stones in the burger. This is a safety issue.

McDonald's stopped selling the burger to keep customers safe.

Here is a picture of the burger.

McDonald's stopped selling the burger after some customers complained.

The company used local corn to help farmers.

McDonald's is looking into how stones got into the burger.

The burger will not be sold again.

Over one million burgers were sold before it was stopped.