Facing the righteous indignation of customers demanding mozzarella sticks that actually contain cheese, McDonald’s is doing a dairy apology dance, saying that cheese must have somehow escaped its breaded casing.

Though it can’t go back in time and rescue each customer’s mouth from meeting a cheeseless fate, McDonald’s offered a mea culpa on Thursday.

“We are aware of a low volume of guest concerns about our Mozzarella Cheese Sticks,” a spokeswoman said in an emailed statement to the Chicago Tribune. As it turns out, cooking is tricky.

“In these instances, we believe the cheese melted out during the baking process in our kitchens and shouldn’t have been served,” the spokeswoman said. “We apologize to any customers who may have been affected. We are working to fix this in our restaurants.”

Consumerist did reach out to McDonald’s yesterday to ask for more details on the cooking process, but we did not receive a response.

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