I can pull shots that I enjoy. Before I sold my Expobar, I even knew that my wife liked the espresso brewed at a slightly higher temperature (on most blends) than I did. I can say this is really good espresso and this is less good.
What I want to do, and can't, is describe the flavor in any meaningful way. My question is: how do you make the jump from 'I like [X] more than [Y] and all I did was [dose a little more, brew a little hotter, etc.]' to cupping notes on particular blends. I can identify some flavors, but usually only after I am told they are there (like when I got a pound of CCC's Toscano - I could taste the slight hazelnut and chocolate, but doubt I would have if I hadn't known that was what was in the blend - perhaps I was even forcing those flavors on my palate).
What is a good way to further my coffee palate?
[As a side note, one reason I have become more interested in this is my recent increase in home roasting and my even more recent purchase of BobRoseman's HotTop.]
Thanks for any advice or links (I searched, but couldn't find anything dealing with this specifically either here or elsewhere).