After a year of this thread, I can clearly say that prices are increased but it is yet to be doubled in my region. Governments are increasing tax rates at the time of Pandemic not it is getting added to the actual price of the products and it will increase further when the new normal begins.
Which country you are residing in? Even if the tax rates are increased, that should not have much impact on the food prices. Because the governments almost never increases the tax on agricultural products. However, increasing oil prices may cause additional expenses in transporting food products. Here in my country there has been no increase in the food prices. We are paying the same rates that we used to pay before the pandemic.