It is a frequent grumble of rural folk that city slickers aren’t aware of where their food comes from.
And far from not only not knowing their onions, a new survey shows many aren’t too clever on a number of other vegetables either.
Nearly one in three Brits has no idea how common fruit and vegetables are grown, the survey found. Researchers found three out of ten adults can’t explain how potatoes are produced, while one in ten think tomatoes are harvested from the ground.
Even more worryingly, one in five Brits believe melons also grow in the earth and that parsnips thrive on trees.
On top of that, one in 20 Brits thinks Granny Smith’s is a variety of potato and 20 per cent have never heard of a King Edward or Maris Piper.
The research, which was carried out among 2,000 adults, was commissioned by the Potato Council to celebrate the launch of a new potato classification system.
Caroline Evans, from the Potato Council, said: "It’s worrying to think there are people out there who believe types of apples to be potatoes and well known varieties of British-grown spuds are unheard of.
"There is plenty of information available, such as our new potato classification guide, so they can read up – especially if children are inquisitive enough to ask where food comes from.”
It also emerged that one in 20 adults are completely embarrassed by their lack of knowledge and a quarter said they regularly come unstuck when kids ask them where certain food comes from.
Cooking is an issue too – despite being one of the nation’s favourite ingredients, one in 20 adults admit to struggling to cook potatoes.
Half claim that their roasts aren’t fluffy enough, 28 per cent say that their mash isn’t smooth enough and 34 per cent struggle to get their boiled potatoes to hold their shape.
The study found the hardest vegetable to cook was asparagus, followed by the swede.
Ms Evans added: "Potatoes are one of the most versatile foods – they can be used to create so many tasty dishes and being naturally fat free, they’re a nutritious base for lots of meals too.”