"It's sure to test the most seasoned campaigners," Mr Spinks said.
"We've already had some Brisbane-based professional eaters, including the Queensland champion register so if you rate yourself on the chow then this is your chance to take them on to win the title.
"It's going to be a lot of fun and it's a great way to support an important local charity."
There will be a live DJ performing on the day, Blackflag drinks specials available and a "hugely entertaining" MC to keep things bubbling away.
Entry is $30 per person and every entrant will receive a Hello Harry cap and a voucher for a free burger on their next visit to either the Birtinya or Ocean Street stores.