1. Stick to a list
2. Plan your menu around the sale ads.
3. Don't shop hungry.
4. Use a pricebook (I have to update mine with all the prices going up

)
5. Try and shop without the kids or significant other.
6. Buy generic or store brand.
7. Plan a meatless meal once a week. Breakfast items are cheap to make.
8. Don't buy convenience/prepackaged foods. Make as much as you can from scratch.
9. Shop places like Aldi's or Save-a-Lot.
10. Walmart will price match other ad's. Some will match generic product for their generic product.
11. Coupons.
12. Buy fruit/vegetables in season.
13. Don't buy household or personal products at grocery stores. You can almost always find them cheaper at Target, Walmart, etc.