How is cider purified?

Answer 1

spitting purifies it faster Try this site, it sort of explains how,why and with what: Production of cider with a purified pectin methylesterase

The present invention discloses the inclusion of an enzymatic maceration step in the cider production process. The enzyme applied in the maceration step is a pectin methylesterase substantially free from depolymerase activities. As a result, the process time is considerably reduced and the use of a separate defecation step can be circumvented. This makes the cider production process much more economic as compared to the current process.

* http://www.freepatentsonline.com/EP0684305.html

Answer 2

Cider can be purified through processes such as filtration, fining, pasteurization, or using enzymes to remove impurities and clarify the liquid. Filtration typically involves passing the cider through a series of filters to remove particles and sediments. Fining agents can also be added to help clarify the cider by binding with suspended particles and making them easier to remove.