I don't can stuff...I know, i need to learn, but I freeze soup. You can let it cool and put it in quart sized freezer bags. Flatten them out and freeze them in "sheets" It really does take up less space.
Our problem is organics and fresh foods. I try to buy stuff in season but it is hard when I have to shop with the kids. They see it, they want it, ya know.
I find that if we are in a food rut I sit down with a bunch of cookbooks one evening and start pulling recipes for things that don't have a lot of ingredients that I need to buy (spices and things I already have in stock, for example) and try to switch things up. Let DH pick some things he might like to try from some cookbooks too so that if he doesn't like it, its his fault!
We need lots of milk so I have to shop weekly. If I shop for a whole month then I find myself constantly asking hubby to stop for a few things here and there on his way home and he ends up buying nonessential JUNK every time. He can spend an extra $1-200 a month if I send him to the store.
One thing he has done is to get a small refrigerator to keep in his office. Think college dorm size, and he buys a loaf of bread, some fruit, maybe some yogurt or cheese, and lunch meat to keep at work. Keeps him from going out to eat for lunch. Now if I could just get him to stop getting coffee EVERY day and make it at work instead I'll really be happy.