The Dail's been told there's been a 55 per cent increase in the cost of some staple supermarket items in the last three years.  The Social Democrats are bringing forward a bill that will give the food regulator powers to investigate what is going on.  

Are the shops ripping us off or is something else behind the increase? All to discuss with Social Democrats TD, Jennifer Whitmore and Adjunct Professor in Economics at Trinity College Dublin, John Fitzgerald.