- Edited
The grind is important. My Kroger has a grinder on the coffee aisle where you take the whole beans and run them through the grinder and back into the bag for purchase. The espresso grind on that machine just happens to works perfectly with my machine. My wife once brought me some ground by Starbucks - It was so fine that my cheap Cuisinart doesn't have the pressure to run through reliably - so keep that in mind when considering your options. The downside to grinding on the store grinder is that purists say you should only grind what is needed immediately as the beans will stay fresher in whole form. My palate isn't sensitive enough to tell if the beans were ground minutes ago or three weeks ago though. I also have a hand crank grinder, which takes a lot of work for a double shot, but works well when properly adjusted. It took me a long time to dial it in though, even a little too coarse makes a very noticeable difference in the quality of the outcome. And the finer you grind, the longer you have to run the crank. The handle is removable though so I could chuck it into my cordless grill if I really get lazy.