Which? analysed inflation on more than 26,000 food and drink products in the three months to the end of March 2023, and compared the prices to the same time last year.
The research also revealed how the popularity of the supernarket’s value ranges has risen, as more people rely on cheaper foods – 24.8 percent increase to be precise.
In comparison, standard supermarket own brands increased by 20.5 percent, while branded and premium ranges were both up 13.8 percent.
In March, food and drink inflation rose to 17.2 percent, compared to 16.5 percent in February.
Sue Davies, Which? head of food policy, said: “Our latest supermarket food and drink tracker paints a bleak picture for the millions of households already skipping meals of how inflation is impacting prices on supermarket shelves, with the poorest once again feeling the brunt of the cost of living crisis.
“While the whole food chain affects prices, supermarkets have the power to do more to support people who are struggling, including ensuring everyone has easy access to basic, affordable food ranges at a store near them, particularly in areas where people are most in need.