McDonald's is such a favourite with so many people around the world, but there still seems to be so much that we don't know about it.
Every day is a learning opportunity though and we keep discovering new things - like when we recently got a look inside the London HQ of the company and got to see how they create new products.
And now we've found out some more secrets, thanks to a former employee, who has previously worked at two different branches of McDonald's – one in Salford and one in Grimsby.
