Blade or burr grinder: which should you buy?

A blade grinder is the little spinning-propeller type, often sold as a "coffee and spice grinder." It hits the beans at random, so you get dust and boulders in the same batch. The dust over-extracts and goes bitter, the boulders under-extract and go sour, and you taste both. No technique fixes it.

A burr grinder passes beans between two burrs set a fixed distance apart, so every particle comes out roughly the same size. That evenness is the whole game. If you own a blade grinder, replacing it is the best few dollars you'll spend on coffee. Everything below assumes burrs.

Hand or electric coffee grinder?

Hand grinders put your money into the burrs, not a motor and housing. So dollar for dollar at the lower end, a hand grinder gives you better grind quality. The trade-off is effort: a minute or so of cranking per cup, more if you're grinding fine for espresso.

Electric grinders buy you speed and no elbow work. That's worth a lot if you're grinding every morning, making several coffees, or just don't want a workout before caffeine. But a cheap electric spends much of its price on the motor, so you're often paying more for worse grind quality until you get past a couple of hundred dollars.

Rule of thumb: on a tight budget, hand grinder. If convenience matters more than money, electric. If you drink espresso, lean towards spending more either way, because espresso is far less forgiving of a cheap grind.

Single dose or hopper grinder: what's the difference?

Every hand grinder is single dose by nature: you load what you need, grind it, done. Electric grinders come both ways. A hopper model is a fill-and-forget convenience, good if you drink the same coffee every day and get through it quickly. A single-dose electric skips the hopper, so you weigh in one dose at a time.

Single dose matters more if you switch between coffees, which most of our subscribers do, since the whole point is a different roaster each fortnight. Grinding to order means each new bag tastes the way the roaster intended, with no leftover grounds from the last one muddying it. The catch is a slightly slower workflow and, usually, a higher price.

What grind size does each brew method need?

Pour over, plunger and batch brew use a medium to coarse grind, and they're relatively forgiving. Most burr grinders, hand or electric, handle them well. This is why a filter drinker can be perfectly happy with a $100 hand grinder.

Espresso is the hard one. It needs a fine grind, and tiny changes in grind size swing the shot from sour to bitter. A grinder that's fine for filter can be frustrating for espresso if it lacks fine, precise adjustment near the fine end. If espresso is your main game, that's the reason to spend more.

How much should you spend on a coffee grinder?

Here's roughly where the money goes as you climb. At the bottom, you're buying even, controllable grinding for filter. In the middle, better burrs, smoother adjustment and, with a premium hand grinder, espresso capability that genuinely holds up. At the top, electric convenience with flat burrs, low retention and the consistency that makes single origins taste like their tasting notes.

The honest bit: past a certain point you're paying for marginal gains and convenience, not night-and-day cup quality. Don't let anyone talk you into a grand's worth of grinder to brew a plunger.