Ammon News - The unusual order amused staff - who put out an appeal on TikTok asking for the mystery customer to get in touch following their mysterious request.
How much do you love ketchup?
If the answer happens to be "a lot", then it's a glorious time to be alive.
McDonald's can supply you with as much as you need - although there are arguably much better ways to get some.
One customer it seems really, really , loves the red stuff.
So much that they spent cold hard cash transporting a container of the stuff to their home from McDonald's.
Does it taste extra good or something?
Naturally, the staff members at the McDonald's in question were left with their eyebrows raised by the order.
But they obliged - and hopefully made one customer very, very happy.
Let's hope that they hadn't accidentally meant to order a burger with no ketchup - because they are going to be disappointed if that's the case.
One worker at McDonald's in Whitby in Canada was left baffled by one customer's order - and shared a video on TikTok.
Their order consisted of a burger container filled with ketchup and errr, that's it.
As the order label showed - they ordered a hamburger, with no patty, no bun, no onion, no mustard and no pickles.
In the video, the worker appealed: "Please help me find this person who ordered this at Whitby McDonald's tonight, they made my night.
"Also I want to know if your rich spending that kind of money on ketchup."
Naturally, people had questions about the confusing order.
One person guessed: "Person probably wanted a side of ketchup but was too dumb to find it."
Another complained: "And you still only filled the bottom of the tub SMH."
Meanwhile, another McDonald's employee went viral after revealing the process to clean the chain's burger grills.
Josiah Kim's eye-opening videos of the step-by-step process have racked up millions of views on TikTok.
The videos sees staff scrape grease and fat after grilling burgers, before scrubbing it down thoroughly.
His videos giving a behind-the-scenes insight into the process have been viewed more than 20 million times since being shared.
One viewer commented: "I'm just happy they clean it bro."
*MIRROR