I used the 'wrong' grind size for 3 coffee brewing methods — it proves why you shouldn't buy pre-ground beans

The comandante c40 mk4 hand coffee grinder with a glass catch chamber and high nitrogen steel burrs.

I'm an ex-barista and now a professional coffee snob, and I'll be the first person to tell a coffee newbie of the horrors of using pre-ground coffee. But there's only so much I can say.

If you've got one of the best coffee makers — like the Breville Luxe Brewer — or the best espresso machines — like the Breville Bambino Plus — you can easily make barista-quality coffee from the comfort of your kitchen. And I'm here to help!