People bring their own cooker, he attaches a valve and a steam pipe, and now he gives you espresso coffee.  Now, this is a real, affordable coffee percolator that works on gas.
很多人把他们的锅拿来， 加上阀门和蒸汽管， 然后就可以做特浓咖啡了。 这是种真正而且便宜 的燃气式咖啡机。