What are the four ways of decaffeinating coffee?

Today there are four major processes used for decaffeination:  

-Direct-Solvent Process

-Indirect-Solvent Process

- Swiss Water Process,

- Carbon Dioxide Process. 

This article touches upon all of them to find out a bit more regarding the actual process of decaffeinating coffee beans.

What are decaffeinated coffee beans?

A Little Guide to Roast Decaffeinated Coffee Beans Decaffeinated coffee beans, I hear you say? Why should I start with decaffeinated coffee beans? Why not let the roaster grind decaffeinated...