Made up essentially of just egg and fat, mayonnaise should be rank - but it's not, and we absolutely bloody love to douse pretty much everything in it.
Mayo and chips? Classic. Tuna mayonnaise pasta? A solid meal. Mayonnaise on toast? Better than butter. And just think of all those pizza crusts that would be nothing without a dollop of the good stuff.
Which makes it all the more baffling that McDonald's doesn't let you opt for mayo with your meal, despite having almost every other sauce under the sun, like barbecue and sweet and sour.
Well, apparently mayo just doesn't cut the mustard for McDonald's, where there apparently isn't enough demand to warrant having it as an option.
MEET THE TOTAL HERO WHO SET UP A COMPUTER IN MCDONALD'S:
"What we offer in our restaurants is based on customer demand," a McDonald's spokesman told Cosmopolitan. "We don't currently have any plans for mayonnaise to be made available."
We knew the world could be a pretty cruel place, but this is simply unjust.
Maybe the bosses at Maccy D's are just worried about trying to compete with Belgium, where frites are not only something of a national delicacy, but come with the thickest, richest, tastiest mayonnaise you'll ever find. Definitely hard to beat - though we'd happily take the hit if slightly substandard mayo means we could enjoy it with our Big Mac and fries.
Thankfully, the good people of Hack the Menu have unearthed some secret menu gems that you can have.
If you're fed up with all the usual, boring dipping options like ketchup or sweet and sour, apparently if you ask for a pot of Big Mac sauce you can usually get it for free. Not quite mayo, but it'll have to do.
There's also what's been dubbed the 'Poor Man's Big Mac', which involves ordering a McDouble but asking for extra lettuce and Big Mac sauce instead of the standard ketchup and mustard, slashing the price.
And then there's what's called the 'McGangBang', one of McDonald's most famous secret menu items. Simply order a McDouble and a McChicken, placing the latter in between the patties of the McDouble to create a towering burger with a double meat hit.
So while the fast-food giant may not be succumbing to our requests for mayo anytime soon, at least there's plenty to be getting on with in the meantime.
Now, who's been left feeling starving - and absolutely desperate for a portion of Belgian frites?
Featured Image Credit: PA