I don't think it's just a question of cost, it's a question of how to cook healthy food on a budget. Some people would have no idea that you can make your own wedges and chips from potatoes. Being on a budget means being more inventive and some people have never learnt how to cook.

I'd like to see government-sponsored TV ads showing how to cook simple, cheap, healthy meals or a 5 minute segment within Masterchef.

If people have never seen their parents cook, they really are behind the eight-ball - being on a budget and worrying that you're going to stuff up the $20 of ingredients you've just bought because you don't know how to cook suddenly makes a Maccas run seem very appealing.