I've always used coupons and clip all that would match my grocery lists. Sometimes however I find a store brand that costs less and I leave the named brand coupon on the shelf for the next person. I also have a Sams card so I do buy in bulk items I know I will use.
To save money I survey my cupboards and pantry and try to make a menu from what I have on hand. If I lack one item I put it on the list. Some weeks all I need is the fresh meats or produce required to make my menu items.
My grandson loves to help me *dream* up a menu when he stays but I think it's because he wants to make sure okra and liver never makes it to his plate. 8-)