The youth of today, we are reliably informed, will be the adults of tomorrow. So we should start packing our bags now, if the latest survey from Dairy Farmers of Britain is anything to go by.

Apparently, a disturbingly large proportion of our younger generation believe that ketchup and bread are vegetables.

As part of its ‘Grass is Greener’ campaign, which aims to find out the truth depth, or lack of it, of children’s understanding of healthy eating, the group questioned over 1,000 children between the ages of eight and 15 to establish precisely how much they know about what constitutes Five-a-Day.

The results are now in and the answer seems to be: very little at all. 22 percent did not include smoothies in their Five-a-Day allocation, more than one 17 percent did not count rhubarb as a fruit portion, 18 percent failed to recognise frozen peas as a healthy vegetable and 31 percent did not think tinned tomatoes counted in the allocation.

More than one in ten counted pasta as a vegetable, while more than one in 20 named bread in the same category.

Four percent of city children did not even think that apples contributed to Five-a-Day. Ketchup was also frequently counted as a legitimate portion.