This is about cooking like your grandmother or great-grandmother used to do. Simple recipes without fancy embellishments made from basic affordable ingredients.
Are you still buying salad dressing in a bottle or pasta sauce in a jar? Not only do these conveniences contain questionable ingredients, but in most cases you can recreate something healthier and cheaper from scratch. Of course opening a bottle is more convenient. Investing a little time so shed those conveniences will reward you with not only healthier food, but also full control over the ingredients.