Forget Gatorade, Conor McGregorThe road back into the UFC Octagon is apparently fueled – at least in part – by beer!!

Check out the footage TMZ Sports received from the wedding of the MMA star’s sister earlier this month – the 36-year-old drank almost half a liter of beer in a matter of seconds in Erin McGregor And Terry Kavanagh‘s ceremony in Ireland.

Conor is, of course, currently attempting to return to the UFC after a three-year hiatus… but it’s clear that he has paused his training program to properly celebrate his older sibling’s wedding.

In the clip you can see how a machine made him a custom glass Forged Irish Stout — he almost swallowed it all in one go. After tapping a little more than halfway, he showed his satisfaction with his result with a broad grin… while a moustache formed above his lip.

According to some photos he posted from the festivities, it was far from the only alcoholic beverage he consumed that day – but you can’t blame the guy for celebrating… it was his big sister’s big day, after all!!

The other attendees certainly drank too. Check out some of the photos we took… Machines dispensed Conor’s Irish Stout to guests, decorated all over with tributes to Erin and Terry.

It is unclear whether there will be anything for his comeback fight against Michael Chandler — which has already been postponed once due to a toe injury Conor suffered in the run-up to the planned fight – but before fans started to riot, “The Notorious One” showed that he was able to rely on electrolytes and training in the days following the party.