I live alone and sometimes I'll make a large initial investment on ingredients then make big pots of stew, soups, chili, casseroles etc. that I put into containers and freeze. Otherwise, I eat rather simple foods like tuna salad sandwiches, tomato stuffed with tuna salad, I do have a passion for Lucky Charms cereal. I read the local grocery store ads and buy whatever is on sale especially in the meat section. I managed to get a good sized ham for 10.00 and out of it I had sandwiches, omelettes, ham and beans, made a casserole, made some ham salad, froze some to use later. I guess I probably learned how to shop etc after I divorced and I was trying to take care of my daughter and myself on a very limited budget. Sometimes we'll still have tuna casserole just to remember the "good old days". I don't go out to eat very often.