There’s something about making a cup of coffee that riles people up. Somehow, each debate breeds its own sub-debates — brewer vs. pour over. Hario vs. Chemex. Medium grind vs. coarse grind, and so on.

An electric coffee grinder is the quickest, most convenient way to mash whole beans into brew-ready powder on the average work morning, but there are times when only a hand grinder will do. Maybe the ...

Okay, so you bought a bag of heavenly-smelling single-origin beans down at the hipster coffee shop, but forgot to have them ground. What do you do? If you’re [Jimmy DiResta], there’s no way you can ...