I will admit to being dreadfully extravagant when I food shop.

My business also supplies our household with much of our food.
I have a friend however, who is a shining example of thriftiness! She grows heaps of vegetables all year in a smallish back yard, she bakes her own bread in the breadmaker, makes her own yogurt and a few soft cheeses, preserves as much as she can, (I just got plum jam, quince and crabapple jellies, tomato relish and apricot jam from her) she also makes her own peanut butter, ginger beer etc. When her children were young she never bought disposable diapers, used the cloth ones. She rarely buys household cleaners but uses white vinegar and baking soda for lots of cleaning. She even has a mix she makes up to use in the washing machine and it works a treat! I was visiting her recently and the kitchen smelt divine as she was canning peaches and apricots. And I want some.
I admire her very much but dont possess the patience involved there! Have to admit she does this more because she is an avid ' Greenie' as opposed to saving money, but there is no doubt she saves HEAPS of that.
One site she recommends is
www.simplesavings.co.nz
apparently she gets lots of ideas there. And since I have never visited I shall rectify that post haste!