And they have a special machine, you don't just pour the milk, but you froth it and foam it first.

这种咖啡是由特殊的机器加工成的，并不是把牛奶直接倒入咖啡中。你必须先将牛奶打出泡沫。

youdao

In comparison with XJN-14 flotation machine, it gives such merits as high selectivity, large throughput, high solid content in froth, low energy consumption, less space required and low first cost.

通过与XJN-14型浮选机对比，表明FJC20型浮选机浮选选择性好、处理量大、泡沫浓度高、电耗低、占地面积小、购置费用低。

youdao

Using edible ink, the machine can also add personalised messages onto the coffee's froth.

BBC: Zipwhip's Textpresso