(Image: Mitchell Squire/Private Media)

“The price of food is through the roof." This is a widely held belief, but is it true?

In the week the prime minister admitted he doesn’t know how much a litre of milk or a loaf of bread costs, we dive into the supermarket aisles to find the truth about the price of groceries, and how they have changed.

In the past two years, food and non-alcoholic beverages cost 5% more. That’s the overarching category -- you can see it about a quarter of the way down the following graph. As usual, there are products that have risen in price by less than the category overall, and products that have risen by more.