The 34-year-old actor loves nothing more than to chomp down on the meat flavoured snack, and the 'Fifty Shades of Grey' star - who plays the lead role of Christian Grey alongside Dakota Johnson in the erotic movie - has admitted although he trained hard to get his body into great shape for 'Fifty Shades Darker' he was adamant he would not give up the potato treats.
Speaking on BBC Radio One's Breakfast Show on Friday (10.02.17), the dark haired hunk said: "I eat whatever I want but I'll just train a little bit harder, is my thing. But my biggest vice - not actually my biggest vice - but my biggest vice in terms of food is crisps. Beef Hula Hoops."
And the Northern Ireland-born star has admitted he still puts every ringed crisp on each finger and eats them one by one, a trick he has passed down to his daughters Dulcie, three, and 12-month-old Phoebe.
When asked about what method he uses to enjoy the feast, he said: "I still do that now [eat each Hula Hoop off every finger]. And now I've got kids so I pass that one. And they think it's hilarious."
And Jamie's preferred treat has been confirmed on the broadcasting network's Twitter account.
They wrote: "Just in case you were wondering... beef flavour Hula Hoops are Jamie Dornan's favourite crisp. You're welcome. (sic)."
Jamie has revealed he didn't have time to get into shape for the first movie adaptation of E.L. James' novels in 2015, but has worked out harder for the sequel, although he finds gruelling exercise regimes "boring".
He explained: "I had to work a wee bit harder, but I don't enjoy it, I find that kind of stuff quite boring to be honest with you.
"The thing was with this one, the first one I only got cast five weeks before filming so I didn't really have time, and this time I had the benefit of time on my side to train a bit. But I'm not great about that. I'll train but I won't cut out the carbs, I can't do that. "