The condiment was previously transported to restaurants in sealed canisters and dispensed on to burgers using a quite terrifying "sauce gun".
But now it is yours to own for a limited time only, with 200 500ml bottles being produced, the first of which is being auctioned off on eBay.
It has already received 135 bids and stands at A$23,100 at the time of writing, with eight days still to go.
A further 600 25ml tubs will be sold at each of Australia's 920 McDonald's outlets, with people set to queue round the block for the privilege of making their food taste like grease and hangover.
"Big Mac sauce is one of the most iconic McDonald's ingredients and people often ask us where they can buy it; so we're excited to be the first country in the world to offer tubs of Big Mac sauce to our customers," said McDonald's Australia's Chief Marketing Officer Mark Lollback.
"I know of people who love adding our special sauce to all types of food - from french fries to McNuggets - so it's going to be interesting to see what Aussies choose to add a spot of Big Mac sauce to over the next month."
The sauce's ingredients are no secret - relish, mustard, onion, garlic and mayo - but it is the balance of them that creates the authentic McD's flavour.
- The Independent
