I'd suggest stockpiling, if you've a supermarket nearby that does a lot of Buy-One-Get-One-Free deals, look for offers on food that you can freeze, as well as foods that are dried or tinned and will last a while.
If you can find a lot of bargain ingredients, try using them to cook in bulk and freezing the excess for later days, it can be a great way of making your food go further
I've included some more useful info on my eating Well On A Budget hub if you want to take a look
Cut back cell phone service Cut your cable Cut back the lattes (So cliche) Auto Save Pick up a part time job Start Saving Your Change (stops impulse vending machine buys) Plan where you stop for gas Use your cruise control
My supermarket has a section for older produce and it sells at 75% off. If I'm makeing soup, or chicken pot pie, or spaghetti sauce. I by the needed veggies there. The vegetables are all cooked so their appearance isn't that important.
The same for bananas for banana bread. In fact I look at this area everytime I go in. If there's a good buy there, I work it into my menues.
In order to save, first you need to find out your expenditure. Start out by preparing excel sheet showing details of your expense. Do this for about a month and you would be able to identify you top category of expenditure.
After you know where your money goes, you can start thinking of way to reduce those.