Coffee Beans

Powdered coffee you use every day is ground from beans which were not always brown.
Raw coffee beans are as green as French beans. Roast them and see their colour change from green to light green, followed by pale yellow, golden, light brown, dark khaki, brown, light dark chocolate, blackish and finally, shining piano black.
You never thought of a coffee bean colour spectrum, but see it exists!
This colour change is caused by the Maillard Reaction named after the French chemist, Louis-Camille Maillard. The reaction, which takes place at 285°F or 140°C, goes on to create over 500 new coffee tastes.
Now pick your favourite coffee from a range of coffee bean colours. Guide your friends and share it with them.

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