On a recent AMA on Reddit, a Scotland-based McDonald’s manager was asked if there’s a secret menu. Here’s his answer:
“You can order from the 'Secret Menu.' Just like with any of our sandwiches, you can add, remove or change ingredients by special request. These are called 'grill orders' (i.e. Big Mac no pickle)
The items on the 'secret menu' weren't invented by anyone officially at McDonald's, it's just a random persons [sic] guide to burgers you could potentially 'hack' at McDonald's.
…If you explain what it is, and are willing to pay for all the ingredients, it's just another 'grill order' that we can make up.”
So if you’re looking for a secret menu at McDonald’s, don’t think that there are code-named sandwiches every employee is aware of (although some do exist). Instead, know that you can get any combination of sandwich ingredients you want; all you have to do is ask.