Prince Charles has vowed to help save one of Britain's "iconic national dishes" - the fish and chip supper.
In a speech to representatives from the world's fishing industry, the Prince of Wales said fish stocks must be managed more sustainably if Britain's national dish is to remain on the menu for many years to come.
He said: "Fish and chips are part of British culture, one of our iconic national dishes, but I wonder if it is an aspect of our national life that we can safely say can be sustained indefinitely?"
Reminiscing back to his school days, the heir to the throne added: "When I was at school here in Scotland I used to escape down to Inverness to enjoy fish and chips.
"It never occurred to me that I was eating food that had such a reliance on how we treat a wild natural resource."
The prince is using his address to highlight the research of his International Sustainability Unit's (ISU) Marine Programme , which has found ways in which fish stocks can be managed more sustainably.
"The simple fact is that fish and chip shops rely on there being plenty more fish in the sea, and that is only going to be the case if we take care of fish stocks now and plan for them to be there long into the future," Prince Charles said.
Following his speech, the Prince was due to visit the marine research vessel Scotia in Leith harbour.
In the ship's galley, he will join chefs in preparing a fish and chip lunch comprised of sustainably harvested Scottish haddock.