The benefits of green coffee and how to brew it It has several potential beneficial properties, related to a high content of biologically active compounds, mainly chlorogenic acid. During roasting, some of these substances are destroyed, so their concentration in green grains is much higher. Green coffee is usually brewed like tea - ground beans are poured with hot water (about 90 degrees Celsius) and steeped for 5-10 minutes. It is recommended to drink it without milk and sugar to maintain its beneficial properties, and no more than 1-2 glasses a day. Read more about the drink here.