For those of us living in the St. Louis area, we have a great way to save money on our weekly grocery bill just by shopping on Thursdays most weeks. For the last several months, Food For Less and Shop and Save (two local grocery chains) have been offering $10 off your grocery purchase of $50 or more almost every Thursday. Shop and Save doesn't even require a coupon. They simply deduct $10 from your total. Food For Less usually requires the coupon from the ad.
Each week I shop in both stores and take advantage of their weekly specials. I use the manufacturers coupons that I have for products I need to purchase, and get the $10 savings in each store. We typically budget $100/week for groceries so this really works well for us. Both stores double coupons up to 40 cents. With a little bit of homework lots of money can be saved.
Don't forget to check the ads of the other stores. I take advantage of their weekly specials on other days of the week as time allows.