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However, José Cil, the CEO of Burger King’s parent company, has said that, when the chain launched the plant-based Impossible Whopper in the US, meat-eaters continued to buy beefburgers at the same rate.

Setting aside the fact that both patties had the distinct taste and texture of fast food, one person preferred the pure beefburger, and the other the mushroom blend.

Scottish households throw away the equivalent of 26 million beefburgers a year, according to food waste campaigners.

Across the world the Big Mac beefburger is the company's signature product.

Order taken, she disappears to emerge minutes later with a huge plate of chips and a beefburger sandwich, on which he promptly deposits a ton of ketchup.