evidence: With the price of all grocery items rising 19% on the year, oils and fats are another category of groceries increasing faster, at 26% in the 12 months in March 2023. All items in oils and fats have seen an increase in price but olive oil has increased the most, increasing by nearly 50% in the 12 months to March 2023. The following figure shows how sharply prices in this category have increased compared with the trend prior to 2021. The last two years have shown stark increases in the price of oils and fats compared with the trends seen before 2021 [...] - takeaway or eat-in burger at 17% (an average increase of 64 pence to £4.35)