If I eat out, I always bring home the leftovers and freeze them in very small portions. That way if I want to add a couple of bites of hamburger or chicken or steak to some rice and vegetables, I don't have to use up the whole piece of beef or chicken. I've started buying more store brands, and only been burned once (dental floss, Target brand -- shreds into strings between my teeth!
). Most everything else has been fine. The biggest change is that I've stopped buying processed foods as much as possible, and I've just joined a CSA (Community Supported Agriculture) so I get a weekly box of local seasonal veggies and fruits. A one person portion is only $15/wk (but is enough for me and my mom), and in my particular program I can pay week-to-week, not pre-pay for the whole season. I'm really excited about that. I was in a CSA a couple of years ago, and loved the way it forced me to try different foods depending on the season.