GC7 wrote:Am I now being told that the path to great drinks is by purchasing a mega expensive commercial grinder? I certainly hope not! Is that the only or even the best path along with good skills to focusing on exploration of taste? My current espresso is pretty darn good and up to par with most of what I get in good café's. I've rarely had that eye opening WOW shot but those are not that common in cafes either.
I think you have an excellent grinder (from what I've read; no direct experience). My personal observation of going from Mazzer Mini -> Mazzer Super Jolly -> Robur is that the main difference is a very noticeable step up in consistency. With the Mini, you get fine extractions. You get consistently better ones when you fluff the grinds as per John's WDT method. Super Jolly, it's a similar story, although the Super Jolly is definitely a step up in terms of "naturally better" pours. With the Robur, you get ultra-consistency with minimal skill. You get great results dosing into the basket and not even distributing the grinds with your hands--literally, dose, tamp, lock & load, pull a good shot. If there's any skill that makes a noticeable improvement, it's dosing the coffee more evenly into the basket (as you thwack the doser). It really frees you to easily concentrate on grind and dose adjustment to tune your pours to what you like.
It's the same story with machines, right? You PIDed your Anita for convenience (and to a lesser extent, safety). You spent over $1000 on an espresso machine that's just way easier to work with than something in the $400-500 range. I think the point of the TGP is that you get a similar, if not better, return on your "investment" in terms of consistency and convenience, when you buy a good grinder. It's hard to trump skills, of course--especially when it comes to cost-effectiveness!
As with espresso machines, of course, grinders seem to have "personalities," i.e. they tend to work better with or bring out different flavors in certain coffees. Most people will tell you that these differences are rather subtle, and indeed somewhat controversial and not concretely explored.