The 1kg doughnut has 600g of dough and 400g of cream.

Is eating a 1kg dinner plate-sized doughnut taking the love too far?

The stats for those who have given it a go suggest it's mostly a yes.

Christchurch bakery Get Baked has been running a 1kg doughnut eating challenge since October last year.

EWAN SARGENT/STUFF Monie Chhour says only 40 per cent of 1kg doughnut eaters get their money back.

The doughnut costs $20 and the deal is if it's eaten onsite in under an hour the money is refunded.

READ MORE:

* Chilli eaters compete in pain

* How to make the perfect doughnut

* Why I don't like Krispy Kreme doughnuts

The rules are: diners have an hour, they have to eat all of it including the cream, they can drink whatever they like, throwing up is an instant fail, challenge attempts are held on Saturdays, it has to be pre-booked.

EWAN SARGENT/STUFF Get Baked's honours board stars doughnut eaters, not employees of the month.

Bakery owner Monie Chhour says about 80 people have made the attempt with a failure rate of about 60 per cent.

Those who beat the challenge get a photo and their eating time on a wall of honour.

The fastest to complete the challenge was a guy called Will who made the doughnut disappear in six minutes and one second.

Chhour says she was stunned to see him buy a box of doughnuts to take away afterwards.

Only one person has been eliminated by throwing up. Most simply just step away and say enough.

The doughnuts are about 600g of dough and 400g of cream.

Chhour says the challenge is something workplace groups often take on for fun.