Move away from your regional large chain grocery stores, to the discount/basic stores.
Save-a-Lot or ALDI’s. Save easily 40% over going to the other places. Yes, they won’t have the selection, and much of the products are store brands, but I only go to the big grocery stores for things I can’t get there.
Especially now that 1 grocery store in the area has basically won the battle and is effectively a monopoly they have jacked up prices insanely over the last 2 years. I can get the same brand name stuff when its available at the discount stores for 1/2 to 1/3 the price.
The taxes you pay in a day far exceed the cost of the food you eat. The gas to get there take a chunk too.