With times as hard as they have been recently I have had to find ways of reducing my food expense. It is only my husband and I, but the expenses can add up. This is a few steps that I personally take that has mad my grocery bill $200 or less to feed both of us for a month.
Keep your grocery money separate for the rest. You can use a separate account, keep the cash in an envelope, or even use a reloadable gift card.
Buy your meats in the family packs, and when they are on sale. I usually purchase a 10 pound bag of chicken, a 5 pound roll of ground beef, and one other meat that is on sale. I also check for meats that have been reduced. During the Holiday seasons you can purchase a turkey for a very inexpensive price. You can use it for a meal, and make lunches for a few days.
Doing the above I usually spend about $75, or less, a month on meat.
Purchase the store brand vegetables and condiments. You can usually spend much less with these options, but compare the unit price when you are purchasing any packaged item.
Stock up on eggs, breads, rice, beans and potatoes. All of these items can be purchase for very little, but can be used for may meals.
Avoid any prepackaged meals, or frozen entrees. These can be very expensive, and take a large amount of your monthly grocery budget.
Following the above steps I usually spend between $150 and $200 a month on groceries. To spend even less I clip coupons and compare ads. I have spent as little as $100 in one month on groceries.