A British Airways business class customer claims airline staff admitted he would get better food on Ryanair than the charred sandwich sent his way.
The director of a specialist engineering company paid in the region of £10,000 for a flight from Miami to Heathrow only to receive a breakfast he claims was "disgusting".
The man, who does not wish to be named, posted photographs of his breakfast on the flight showing a burnt cheese and tomato toastie.
The flyer, from London, wrote: "The disgusting breakfast served in business class on BA 208 from Miami to LHR on the morning of 21 November.
"Cabin crew agreed that it was an insult and I could get better food on Ryanair.
"The business class seats on BA are bad enough but the food now really takes the p***."
The pictures show the bread and thin layer of cheese, which appear to have been overcooked.
There is a single slice on tomato on each piece of toast.
The company promises on its website: "Mouth-watering menus that are thoughtfully prepared using locally sourced, seasonal produce and elegantly presented".
But Penny Larteywrote wrote under the traveller's post: "It looks as though the crew themselves burned it though. I hope you were able to get something in the arrivals lounge?"
Thomas Mao added: "Disgusting even for economy class."
Caroline Payne wrote: "If this was business class what did the poor soul at the back get?"
British Airways continues to be hit by regular complaints about the quality of its in-flight catering.
Earlier this month a businesswoman claimed she fell ill after eating "mushy" and "revolting" food on a British Airways flight.
Sancher Harpe, who lives in Queensland, Australia, flew back to Newcastle for her stepmother's funeral.
But she said her first trip back to England in 15 years was marred by the food on her BA flight.
In October a director criticised the airline for treating vegetarians like "rabbits".
Carolyn Saunders was flying from Vancouver to London when she was served the "truly pathetic" plain tofu, baby corn and rice meal.
A spokesman for British Airways said: "We pride ourselves on the quality of the meals we offer onboard and have heavily invested in our catering, in all cabins.
"We have not received any complaints regarding the catering on this flight."
Four months ago a study carried out by consumer group Which? said that passengers paying huge sums for upgrades on carriers like British Airways have experienced 'inedible' meals, cramped seats and substandard entertainment.
One passenger responded to the survey comparing BA's business class to "Ryanair but with free food".
