McDonald's is currently selling its coveted "special" sauce by the bottle. Unfortunately, however, you'll have to fly to Australia to make the pickup, or have one of your Aussie comrades snag a bottle or two for you, as the Big Mac sauce is only being sold at 40 locations Down Under, with select stores adding 500ml bottles of the sauce to the menu for a limited time. With only 4,000 produced, each bottle retails for $4.95 USD.
This isn't the first time Ronald has made his special sauce available via bottle, though. Back in 2014, the chain sold a number of limited edition bottles on eBay, some of which went for as much as $18,000 USD.
If you can't get over to Australia to purchase a bottle of Big Mac sauce, we do have a pro tip for you: you can request the sauce be put on virtually any item at your nearest McDonald's location.