Please note new stronger dilution!
 
Cocoa, roasted, chocolate, nutty, slightly green but this is a very minor facet. 
A good foundation block for accords like pistachio, hazelnut, chestnut.
 
As with a lot of impact materials, 2,5 Dimethyl pyrazine is found throughout nature - in expected places like nuts, but also a key aromatic in tea, ambergris and rum.
 
Also known as Ketine