Yogurt. This is stupid easy if you have a thermometer. It’s not any cheaper than store bought if you use good organic milk though. I got my recipe from a column Harold McGee did a couple of years ago in the Dining section of the New York Times and it’s never failed. http://www.nytimes.com/2009/04/15/dining/15curi.html Bread. My mom has always made homemade bread and while I don’t quite live up to that standard, I make at least some of the sandwich bread we eat. Recently I’ve been making the whole wheat bread from Cook’s Illustrated, which manages to use about 50% whole wheat without turning into a brick. The recipe is a really, really big pain. On the other hand, the comparable store bought Vital Vittles brand is $5 a loaf, and homemade bread costs maybe eighty percent less. [Update: The CI recipe has now failed for me three times in a row, so I have banished it from my repertoire.]
mmm... squashy
Jam. I make freezer jam, which is so, so, so much easier than you would ever think. It also makes you aware of what a shocking amount of sugar is in jam, even if you use the low-sugar pectin. Freezer jam is roughly ten times better than anything you can buy in a store, and a lot cheaper. I can make about twelve jars in an hour and a half.
Dill pickles. I make four or five jars a year and just pop them in the fridge. Last year I had to buy the cucumbers for them because my first try at growing cucumbers was less than spectacular.
Hummus. The good quality hummus available in our local grocery stores runs about $4 a cup. Once I’ve cooked the garbanzos while doing other things on my cooking day, I can make it in about ten minutes for a pretty small fraction of this price.
Croutons and seasoned bread crumbs. I learned from Deborah Madison’s book Vegetarian Cooking the genius of putting garlic breadcrumbs on pasta. Every so often I throw the ends of the bread into the freezer. When I get around to it, cube it or put it in the food processor, dry it, and then sauté it with oil and herbs and garlic. It lasts a surprising amount of time in the fridge. You can pop it into the toaster oven briefly and have warm croutons on your salad or fragrant, crispy breadcrumbs on your mac and cheese.
Chili powder: Toast, grind, done.
Vanilla. Buy vanilla beans, slit open, mash up the insides, put into vodka. As far as I can tell, you just reuse the jar and keep adding new beans and vodka until it gets too crowded in there.
Roasted tomatoes. Each tomato season for about ten weeks I buy 15-20 pounds of tomatoes a week, slice them thick, spray with good olive oil and sprinkle them with salt and a pinch of brown sugar. Then I roast them in a low oven until they’re somewhere between squishy and leathery. Total ambrosia. No matter how many Ziploc freezer bags of these I make, I run out six or eight months later. This year I wanted to make a couple of solar cookers so that I didn’t have to have my oven running all day once a week in the summer. Maybe next year. I fantasize about growing enough tomatoes for this purpose.
Granola. This is marginally useful, since I’m the only one in the family who will eat it.
Pizza. If I had more time, I’d put up thirty jars of sauce for the year and freeze lots of batches of dough. As it is, I make the crust and the dough each time we want to eat it. Yes we do get takeout pizza too, but I consider that to be a different type of food.
Pesto. Still dreaming of growing enough basil for this, but no, I buy it. Like the tomatoes, I make a big batch each week all summer long for the freezer, and it still runs out by April. Pesto isn’t cheap to make, but it’s still cheaper than what they have at the store and it’s easy to make.
Whole grain pancakes. When I’m really on top of things I make a big batch of dry mix with a simplified version of the Cook’s Illustrated recipe. Then we can have healthy but yummy pancakes in about 20 minutes on a weekend morning. The leftovers can be saved to reheat in the microwave. Then we run out of mix and don’t have them for five or six months. I used to simply cook a triple batch every few weeks and freeze them for later use.
Cranberry sauce. Now I can buy berries grown by a family I know near my hometown in Wisconsin. (Never mind that they’re imported several thousand miles to California.) When they’re available during the winter holidays I pop about five bags in the freezer. I also put small handfuls of plain frozen cranberries into smoothies.
Applesauce. We inherited a large and unruly Gravenstein apple tree with our house. Every other year* it produces about 300 apples, which I pick by standing on our carport roof with my fruit picker. Some go to friends and neighbors and some get eaten fresh. Gravensteins don’t store well, so mostly they get turned into applesauce. Friends tell me that I make very good applesauce, so of course only one of my kids will eat it.
*Every other other year it produces almost nothing. The tree is about 25 feet tall and cannot reasonably be thinned in a high yield year, so it productivity seesaws up and down.