title_body: Chemex Setting for Bay Area Costco Grinder Machines
upvoted_answer: I tend to go with a coarse grind for my Chemex, but ultimately, it should depend on the flow through rate and your desired extraction. It will always be fresher and more consistent if you grind it yourself and tune the grind to your brewing style. I dialed mine in by taste and timing, starting with the brewing recipe from George Howell Coffee.