实际上不适合做储备的食物种类蛮多的，比如泡面，保质期只有六个月；比如压缩饼干，比如肉类罐头等。这里老外给的十种建议也是可以参考的
1. Any canned vegetable or fruit that you do not like
罐装水果和蔬菜：口感远不如新鲜蔬菜，轮转困难。不过这个还真是不一定，比如豆类和黄桃个人感觉还不错
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
金枪鱼。时间长了会变成渣，另外金枪鱼有重金属沉积的问题
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
面粉。本身含水，不适合超过半年的储存，会馊掉。另外虫害也很严重。
小麦好一些
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
苏打饼干。因为油脂氧化久储会变馊，这是真的我试过。除非你有密封罐和吸氧剂。
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
全麦饼干。同样是变馊的问题。
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
早餐麦片。包装不是给长期储存设计的。
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
罐装番茄制品，包括茄汁类的肉罐头。番茄汁会腐蚀铁罐……
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
自制的菜干和脱水蔬菜。可以存但不能保证稳定的保存期，需要经常检查，一年左右必须轮转（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
红糖。其实红糖是含杂质的糖，没有白糖块保质期长。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
沙拉酱。这个没有看太明白，应该是储存期偏短
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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