The Grocery Commissioner is shining a spotlight on grocery prices this festive season.

Pierre van Heerden is challenging supermarkets to implement Everyday Low Pricing on staple items before Christmas.

Demand typically rises at this time of year - and van Heerden says prices often do, too.

He says groceries have been this year's biggest driver of cost of living pressures.

"Supermarkets can actually bring a bit of Christmas cheer and provide something back to consumers."

LISTEN ABOVE

• Cost of living: Many will cut back spending this Christmas
• Fruit, vegetables, cheese and bread contribute to monthly fall in food prices
• The cost of a loaf of bread: Why this loaf costs $2.99 at one Pak’nSave and $4.99 at another