你最喜欢吃的爆米花袋里，到底有多少空气?

Many snack fiends are familiar with the disappointment of opening a fresh bag of chips or another crunchy snack, only to find it half empty. Pumping a package with a cushion of nitrogen helps protect the delicate goods inside, but how much of what you're paying for really comes down to stale air?

许多爱吃零食的人都很熟悉那种失望的感觉:打开一包新鲜的薯片或一份松脆的零食，却发现里面只有一半，其他都是空气。往一个包裹里泵入一层氮气有助于保护里面的精致物品，但你为这些空气到底花了多少钱?

If popcorn is your snack of choice, the answer is more than half, according to new data shared by Direct Air. The UK air compressor supply company found that the contents of an average bag of popped popcorn are only 46 percent snack food and 54 percent air. Though every bag of popcorn contains some air, the proportions of some brands are more deceptive than others. Proper Corn peanut butter and almond-flavored popcorn was the worst offender, with the air pocket making up 71 percent of every bag. It's followed by the sweet and salty and simply salted flavors from the Nude Popcorn Company, each of which come in bags that are 62 percent air.

根据Direct Air分享的最新数据，如果你选择吃爆米花，答案是一半以上。英国空气压缩机供应公司发现，一袋爆米花中平均只有46%是食品，另外54%是空气。虽然每袋爆米花种都含有空气，但一些品牌的比例更严重。最糟糕的是普通的玉米、花生酱和杏仁口味的爆米花，空气占了每袋爆米花的71%。紧随其后的是来自Nude公司的甜味、咸味和微咸味爆米花，每种口味的空气含量都占到了62%。

Other companies are more generous with their products. The salted caramel popcorn from M&S makes up 69 percent of each package. The item also turned out to be the cheapest on Direct Air's list at just £.57, or roughly $.75.

而其他公司对他们的产品较为慷慨。玛莎百货的咸焦糖爆米花比例占69%。这款也是Direct Air最便宜的单品，仅售0.57英镑，约合0.75美元。

If you're looking to get the most popcorn or chips for your buck, there's a trick that doesn't involve sneaking a peak inside the bag. Since the U.S. passed the federal Fair Packaging and Labeling Act in 1966, manufacturers have had to print the net weight on their food labels. That number indicates how much food you're really getting—regardless of the size of the bag.

如果你想用一笔钱买到最多的爆米花或薯片，那么这里有个不用拆开袋子往里看就能知晓的小窍门：自1966年美国通过联邦《公平包装和标签法》以来，制造商不得不在其食品标签上打印净重。这个数字表明你真正可以得到多少食物，而无论其袋子大小如何。