Cooking food from scratch at home is a great way to save money on food. Even when cooking at home, many people buy pre-made meals. These are convenient but relatively expensive. Buy the ingredients and make it yourself.  Buy staple ingredients instead of pre-made meals. You will be able to make much more food for much less money, for instance, by buying a bag of uncooked rice than by purchasing microwaveable rice bags. If you eat large portions, cutting down a little can save you money. Try to save part of the meal for later. Freeze leftovers if you won't eat them right away.   Try new flavors and spices. A fish fillet or chicken breast can become a more exciting dish with a novel sauce or seasoning. Try a spice you are unfamiliar with, or a condiment from an Asian, African, or farmer's market in your area. Make a list of the food items you need. Buy only the items on that list.   Your grocery bill can double or triple if you make impulse purchases or buy things you don't really need.  Don't shop while hungry. If you make a weekly menu, use that to draw up your shopping list. Stick to the menu during the week.  Use coupons. A great way to save money is to find store or product coupons and then plan your meals around them.  If there is an excellent sale on meatballs, consider a meatball sub night. If you find a coupon for bread, it's time for  bread pudding or French toast. Certain inexpensive and healthy foods make a relatively small meal larger. For instance, adding more potatoes to a beef stew will feed more people. Other examples include rice, pasta, quinoa, and couscous. Turns out that a vegetarian diet can be cheaper than a carnivorous diet Make sure you take your supplements, or you could get deficiency diseases. Buying non-perishable items in bulk is a great way to save money. This includes pasta, canned items, dry boxed goods, common spices, cooking oils, frozen foods, and household items like toilet paper and paper towels. In the U.S., you can buy bulk items from wholesale stores like Costco.  Split...

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Write a summary of the previous text in Vietnamese:
Nấu ăn sử dụng nguyên liệu cơ bản. Mua sắm các mặt hàng có trong danh sách. Mua thực phẩm làm nở. Hạn chế ăn ngoài. Mua với số lượng lớn. Tự trồng cây lương thực. Tận dụng sự hỗ trợ dinh dưỡng trong khu vực.