In the restaurant world one of the biggest problems is waste, twenty percent of food cost is said to be wasted because the whole product is not used.  Now what the hell does this mean?  Well basically it means...

that at home you could save money on grocery bills with out clipping coupons because that’s the kind of fun you should save for the golden years.  So how’s it done?
Well there are many ways which may of course seem obvious and some methods that aren’t.  And with that there is something called opportunity cost which is what you give up in order to do something else.  For example buying whole chicken is much cheaper than boneless skinless chicken breast but to clean a whole chicken just to get the breast may end up costing you more in the end, because of all the time spent preparing.  That is why a balance must be realized so as to save time and money. 
Ok so I mentioned the chicken thing but there are other ways, like buying in bulk from places like Costco.  Use just what you need is also huge, because perishable items have a limited shelf life that can waste money. But the most important method is using every usable part of the product.  Let’s use the chicken example again, if you buy whole chicken, all the scraps can be used with the scraps of vegetables to make a stock.  Good luck with that.

Greek Freak Salad
Black pitted olives
1 Cucumber peeled and cut into chunks
3 Roma tomatoes cut into chunks
½ Red Onion sliced thin
1 cup Feta crumbled
2 heads Romaine lettuce
3 ounces Olive oil
1 ounce Red vine vinegar
Fresh oregano
Salt and Pepper to taste

First salt cucumbers and drain of excess water, and then mix in remaining ingredients.  Eat!