I'm sure most of you know about it but I will just share some of grocery tips I know. If you want to save money, do grocery shopping at the end of the day because they have a lot of items on sale like meat and bread, delis, frozen items and more. They baked bread at 3-4pm and after 4pm they put almost all bread on sale.
If you are doing grocery shopping once a week, avoid shopping on weekend where shelves are mostly empty. The best day to shop is on Thursday where most of the grocery stores are refilling the shelves for the weekend's rush, they also have good discount. Check out on butter sales because you can stock it on your freezer and it will last for months.