Imagine, if you will, the miraculous prospect: eat up all of your leftovers and you could save an impressive £8 a week on the shopping bill. Alas! Could it be? Ye gods. Or, alternatively, don't vote Labour and you could save £80 a week in tax rape.

Still, it seems that the Prime Minister's ignorance of food consumption is only slightly bettered by that of our primary school kids.

Apparently, a survey conducted by the Dairy Farmers of Britain found that many children lack general knowledge of food and nutrition.

The survey of 1,000 children, aged between eight and 15, claimed that 18 per cent of the children had no idea where yoghurt came from, with two per cent thought that eggs came from cows and bacon from cows or sheep.

It was also discovered that 10 per cent of eight-year-olds questioned didn't have a clue that pork chops were from pigs.

Not that it's a big thing. I mean, we're teaching these kids that piggies say oink and sheep say baa and cows say moo, it hardly goes hand in hand with key stage three that you then get them reading Daisy's Day Out At The Abattoirs, does it?

But, when you look at advertising in-between the cartoons, it's hardly surprising that children don't know what they're putting in their mouths.

Most of the food aimed at their demographic is covered in grease and breadcrumbs.

Dinosaur bits: water-pumped battery chicken covered in breadcrumbs. And so on. It's not so incredulous to find they think ham comes from a Tyrannosaurus, is it.

Yet, amazingly, when asked what Mars is, kids automatically think of a chocolate bar, another survey shows.

Perhaps if there wasn't such a price difference between the ingredients of a home-cooked meal and cheap-bought freezer processed food, there wouldn't be such a general ignorance among our little people regarding food.

So, when we're told that we're facing child obesity and apparent food wastage, is it any wonder?

However, the survey did show that all the primary school kids quizzed knew that milk came from cows. Which is presumably more than old Gord.