| 摘要 |
The percolator has a cylinder, made of plastics material, with a circular ring (A) on its inner surface. Its lower end has a screw thread on to which a sleeve is screwed. This holds a capsule, containing ground coffee, that is held by the inner ring. The cylinder is filled with hot or cold water and a piston, with a watertight joint, is put into it. This is pushed down, by its head, to force water through the coffee.
|
