If you do one big monthly shop, you can calculate what that would be on a weekly basis. I'll start: I spend about $55 a week on groceries.

I have never seen a salvage store like Greene County Damaged Freight and Foods, which sells food at deep discounts because they've reached their sell-by dates or have been damaged during transportation, but I would certainly not be averse to shopping at one.

Sarah Todd explains how to pick out fruits and vegetables.

How long is too long to keep food that you buy.

Lindsey Weber figured out how to keep herself in cereal for days.

he data shows that a little more than 12 percent of our spending went to groceries in 1982, and now it's under 9 percent.