實際上不適合做儲備的食物種類蠻多的，比如泡麵，保質期只有六個月；比如壓縮餅乾，比如肉類罐頭等。這裡老外給的十種建議也是可以參考的
1. Any canned vegetable or fruit that you do not like
罐裝水果和蔬菜：口感遠不如新鮮蔬菜，輪轉困難。不過這個還真是不一定，比如豆類和黃桃個人感覺還不錯
Don’t assume you will fall in love with slimy, aged canned apricots five years from now if you detest apricots now! Canned veggies and fruits aren’t nearly as tasty as fresh versions, so if you decide to store them, make sure you really like them.
2. Tuna
金槍魚。時間長了會變成渣，另外金槍魚有重金屬沉積的問題
I know that canned tuna is a staple in many food pantries. However, I’ve discovered that after a couple of years, canned tuna becomes mushy. Now, if you love the taste of tuna, you may not mind the mushy version, but for me, I really didn’t like it. Also, tuna from various parts of the world has been known to contain mercury and other contaminants.
3. Flour
麵粉。本身含水，不適合超過半年的儲存，會餿掉。另外蟲害也很嚴重。
小麥好一些
As flour ages, it can develop a stale, rancid smell. Additionally, it likely contains the microscopic eggs of flour weevils, which will hatch at some point. To get the longest possible shelf life out of flour, first place it in an airtight container and freeze it for about a week. This will kill the insect eggs. Then, before storing it, add an oxygen absorber or two, depending on the size of the container. Still, you can expect a shelf life of 18 months or so from flour, which is why most preppers prefer to store wheat.
4. Saltine crackers
蘇打餅乾。因為油脂氧化久儲會變餿，這是真的我試過。除非你有密封罐和吸氧劑。
Just for fun, take a sleeve of saltine crackers out of the box and set them aside, at room temperature, for 3 or 4 months. You’ll never get over the stench of rancid saltines! If you must, you could store them in an airtight container with oxygen absorbers, or learn how to make them from scratch. Buy and enjoy saltines but do rotate through them and don’t depend on a giant stash staying fresh a year from now.
5. Graham crackers
全麥餅乾。同樣是變餿的問題。
I didn’t think our family favorite, graham crackers, could go bad, but they do go rancid with time. Again, you can repackage them in an airtight container using oxygen absorbers, but that’s a lot of extra work. You can also store the ingredients to make homemade graham crackers. Have an extra 3 or 4 boxes around is quite fine. Just remember to rotate and use up the oldest crackers first, while storing the newly purchased crackers for later.
6. Breakfast cereals
早餐麥片。包裝不是給長期儲存設計的。
These are not packaged for long term storage, likely contain GMO ingredients, and probably contain a lot of additives that you would just as soon not consume. However, I know they’re a quick and handy breakfast food, especially if you have kids. If you must store them, again, rotate and repackage them for the longest possible shelf life.
7. Canned tomato products
罐裝番茄製品，包括茄汁類的肉罐頭。番茄汁會腐蝕鐵罐……
Personally, I have always stored a number of canned tomatoes, tomato sauce, and tomato paste, but then, we use those products often in our meals. Over the years I have heard more complaints about canned tomatoes than any other canned foods: the cans leak, they bulge, a seam opens. If you store these, be sure to rotate through them and plan on growing your own fresh tomatoes so you’ll have those to rely on instead.
8. Home-dehydrated foods
自制的菜乾和脫水蔬菜。可以存但不能保證穩定的保存期，需要經常檢查，一年左右必須輪轉（吃）掉
Again, these aren’t bad, but for long-term storage they won’t last nearly as long, mold-free, as commercially dehydrated foods. This is because we have no way of measuring the actual moisture content of our home-dehydrated foods. We dry them, “until crispy” or “leathery” but those are pretty subjective measurements. Commercially dried foods are tested for moisture and then packaged in a container in which most or all of the oxygen has been removed. If you dehydrate your own foods, and please continue to do so!, just keep in mind that it has a shelf life of a year, maybe two, and rotate through them.
9. Brown sugar
紅糖。其實紅糖是含雜質的糖，沒有白糖塊保質期長。蜂蜜也很好。
There really is no need to store brown sugar if you have granulated sugar and molasses on hand. Molasses has an extremely long shelf life, as does sugar, and when you combine 1 cup of sugar with 1 tablespoon molasses, you have freshly made brown sugar.
10. Bottled salad dressing
沙拉醬。這個沒有看太明白，應該是儲存期偏短
When a bottle of Kraft ranch salad dressing is the same color as Thousand Island, you know something went very, very wrong on your pantry shelf! That was our experience just last week. About 4 years ago I used a number of coupons to buy bottled salad dressings for my brand new food storage pantry. I didn’t stop to think that I usually make my own homemade dressings, so here these 8 or 10 bottles sat. Needless to say, we tossed them into the trash. It’s too easy to make homemade from fresh or shelf-stable ingredients, so forget the store-bought dressings unless you rotate through them fairly quickly.
Please keep in mind that I’m not saying to never buy these or never have a few of these on your shelf. They just aren’t good candidates for long term storage, so don’t stock up on them in large quantities unless you really are going to rotate through them on a regular basis.
What foods would you add to this list? What have I forgotten?
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