10 Food Products That Have No Expiration Date 这十种食物的保质期之长，超乎你的想象！

一般来说，吃过期食物会很危险，但有几样食物就算存放了很多年以后再吃，也是安全无害的。下面就来和小译一起看看这些神奇的食物都有什么吧~

01
Rice 大米

The best temperature to store rice is at 4.5°C or below. It's better to store rice in plastic containers for foods (PETE) or in glass jars. As one study shows shows, under these conditions, rice can be stored up to 30 years and it won't lose its aroma or nutritional value. It's also worth mentioning that the study used 2 types of rice — parboiled and polished grains.

稻米的最佳储存温度应该在4.5°C及以下，最好储存在塑料食品容器（塑料材质为聚对苯二甲酸乙二醇酯）或者玻璃罐子内。一项研究表明，在以上条件下，稻米的储存时间长达30年，并且它的香味和营养价值都不会丢失。值得注意的是，实验过程中使用了两种米——蒸谷米和抛光米。

02
Powdered milk 奶粉

Powdered milk that is processed according to all the appropriate health standards can be stored for a long time without losing its nutritional value — just as long as it's stored in an airtight container.

根据所有健康标准而加工过的奶粉可以储存很长时间，并且保证营养价值不流失，这和存放在真空容器中所达到的时间效果是一样的。

03
Soy sauce 酱油

Soy sauce can be stored safely for at least 3 years even if the bottle has been opened. The shelf life of soy sauce in an airtight container can be much longer, but it depends on conditions like the type of soy sauce it is, the way that it was processed, its quality, and the storage temperature.

即使酱油瓶被开封过，依旧可以至少安全存储3年。真空瓶装酱油的货架期可以很长，但是这受酱油的种类和品质、加工方式和存储温度的影响。

For example, high quality soy sauce can only be made through natural fermentation, a process that usually takes anywhere from several months to two years. Only this type of soy sauce can last more than three years. That's why you should beware of certain brands that add chemicals to speed up the fermentation process.

例如，制作高品质酱油必须依靠自然发酵，这个过程在任何地方都需要数月至两年时间不等。只有这种酱油可以储藏3年以上。因此，你要注意判断哪些品牌的酱油是使用了添加剂来加速发酵过程，哪些没有使用添加剂。

04
Maple syrup 枫糖浆

According to the Massachusetts Maple Producers Association, an unopened bottle of maple syrup can be kept indefinitely. And even after having opened it, you can use it for several years if you keep it in a refrigerator.

马萨诸塞州枫糖生产协会表示，一瓶未开封的枫糖浆可以无限期储藏。即使枫糖浆已经开封过，如果把它放入冰箱内，依旧能够存放很多年。

05
Dried kidney beans 干芸豆

Researchers from Brigham Young University have found out that after 30 years of storing, dried kidney beans had changed their visual appearance, but all the samples remained acceptable for use in emergency situations. They concluded that dried kidney beans, as well as other beans, can last for at least 30 years.

杨百翰大学的研究者发现，干芸豆在储存30年后，表皮会发生变化，但是所有芸豆样本都是可食用的，在紧急情况下能以备不时之需。他们的结论是，干芸豆及其他豆子的存储时间至少为30年。

06
Salt 盐

Salt is actually a mineral, not a product, which is why it's impossible for it to spoil. Of course, the mineral can quickly absorb water, turning into one huge rock over time. But ultimately, salt always remains just that, salt. However, remember that iodized salt lasts only around a year. During this period of time, iodine usually evaporates and the salt loses its useful quality, although you can still use it as common table salt.

盐其实是一种矿物，而不是一种食品，这就是它不会变质的原因。矿物的确能够迅速吸收水分，逐渐变成一块巨大的矿体。但是，盐终究是盐，大小不会相差很多。要知道，碘化盐的保质期只有一年左右。在这期间，碘逐渐挥发，盐因此丢失了它的有益效用，不过你还是可以把它当作食用盐正常食用。

07
Strong alcoholic drinks 烈酒

Alcoholic drinks like vodka, whisky, rum and cognac have no expiration date, but it's important to store them in a cool dark place in properly sealed bottles.

伏特加、威士忌、朗姆酒、干邑等酒精饮料没有保质期，但是需要将它们放入密封严实的酒瓶，并且储藏在阴凉避光的地方。

08
Vinegar 醋

White vinegar is another product without an expiration date, but you should still be sure to store it under proper conditions. If you want to keep vinegar for a long time, the best way to store it is in its original airtight container in a cool, dark place away from heat sources.

白醋是另外一种没有保质期的食品，但是你依旧要确保它储藏在适宜的条件中。如果你想长时间保存醋，那么最好的方法是将它存储在原装真空容器内，并且置于阴凉、避光、远离热源的地方。

09
Sugar 糖

Like salt, sugar lasts for an indefinitely long period of time, especially if you store it in an airtight container. But even if sugar absorbs water from the air and turns into a solid rock, it doesn't lose its quality. By the way, powdered sugar and brown sugar can also be stored as long as common sugar.

和盐一样，糖能够长时间存放，尤其是你把它放入真空容器中，保存时间会更长久。即使糖吸收了空气中的水分，变成了一块固体，它的本质也不会发生变化。值得一提的是，糖粉和红糖的储藏时间和普通糖是一样的。

10
Honey 蜂蜜

Honey is a really unique food in that it can last forever thanks to its chemical composition that makes it extremely difficult for bacteria growth. Moreover, if you buy sealed jars with honey in them, you can be absolutely sure that it can't spoil as it won't come in contact with air and water.

蜂蜜是一种非常特殊的食物，它可以永久储存，这是因为它的化学成分能够抑制细菌滋生。此外，如果你购买了密封罐装蜂蜜，并且确保不与空气和水接触，那么它是永远不会变质的。

While excavating one of the Egyptian pyramids, archaeologists discovered some jars of honey. The average age of the finding was around 2,000-3,000 years old. It was still perfectly edible — the archaeologists even tasted it! Some years later, 5,500 year-old honey was found in Georgia.

在发掘埃及金字塔时，考古学家发现了几瓶罐装蜂蜜。它们距今大约有2000至3000年的历史。考古学家甚至尝了尝蜂蜜！事实证明它们完全可以食用。几年后，在乔治亚还发现了5500年以前的蜂蜜。