While this is somewhat tricky to get started, it has the potential to save you hundreds a year. If you have a bulk grocery store [like Sam's Club or Costco] in your area, utilize that resource. Find a group of friends with similar tastes and eating habits and get them to chip in with the cost of membership and then go group shopping. Buy what you need in bulk, divide the price with the receipt and a calculator, and then split up what you bought. The key is doing this with people you can trust and absolutely not compromising with those you can't. If all goes well, this can be surprisingly fun.