The aroma of roasting coffee beans.

烘焙咖啡豆的香味。

When you roast coffee, you generate CO2.

当你烤咖啡时，会产生二氧化碳。

Folks, technology for roasting coffee — it's pretty simple.

各位，烘焙咖啡的技术——其实很简单。

Commercial coffee cultures roast their coffee like this.

商业咖啡文化则是这样烘焙咖啡的。

Indigenous coffee cultures around the world they roast their coffee like this.

世界各地的本土咖啡文化都是这样烘焙咖啡的。

Now, roasting coffee is a lot like making popcorn.

烘焙咖啡很像制作爆米花。

So you don't really know when the coffee was roasted.

所以你真的不知道咖啡是什么时候完成的。

But, if you can make popcorn without burning it, then you can roast coffee.

但是，如果你能制作爆米花而不烧焦，那么你就能烘焙咖啡。

Remember, if you can make popcorn without burning it, then you can roast coffee.

记住，如果你能制作爆米花而不烧焦，那么你就能烘焙咖啡。

And the technology for roasting coffee is pretty simple — you just need heat.

烘焙咖啡的技术非常简单——只需加热。

And like all home roasters, I started to look around my house ways to roast coffee.

像所有的家庭烘焙师一样，我开始在家里寻找烘焙咖啡的方法。

The craft will use the heat of re-entry to roast coffee beans, as they float inside it in a pressurized tank.

该飞船将利用重返地球大气层时产生的热量来烘焙咖啡豆，因为咖啡豆漂浮在加压罐中。

Our housekeeper is roasting coffee every morning.

我们的管家每天早上都在烘焙咖啡。

A pair of entrepreneurs are planning to build and launch a spacecraft that would carry and roast coffee beans in outer space.

两位企业家正计划建造并发射一个航天器，把咖啡豆带到外太空并在那里烘焙。

It takes him 20 minutes to roast the coffee, to grind the beans, and then make a traditional Ethiopian coffee.

他需要 20 分钟来烘焙咖啡、研磨咖啡豆，然后制作出传统的埃塞俄比亚咖啡。

The darker you roast coffee, the darker the colour of that liquid is gonna be and therefore the darker the foam is gonna be.

烘焙的咖啡颜色越深，液体的颜色就会越深，泡沫也就会越深。

When you roast coffee, there's a bunch of chemistry going on, a bunch of browning reactions, and almost all of those produce carbon dioxide as a byproduct.

当你烘焙咖啡时，会发生一系列的化学反应，一系列的褐变反应，几乎所有这些反应都会产生二氧化碳作为副产品。

It undergoes a thermal process just like the process of roasting coffee, it's called torrefaction and what that does is, it takes out low energy containing molecules in the form of gases.

经过焙烧这种类似烘焙咖啡的热处理，作用是以气体形式去除包含的低能分子。

As I said before, they don't want you to think about when that coffee was roasted because you might pick up a bag and think, " Oh, this is two months old."

就像我之前说的，他们不想让你想到咖啡是什么时候烤的，因为你拿起一个袋子，可能会想，“这是两个月前的。”