Ever pulled an espresso shot that runs too fast, drips painfully slow, or looks perfect—but tastes thin, sour, and bitter all at once? This is channelling; unfortunately, this occurs when water finds weaker areas in the coffee puck and rushes through those areas instead of flowing as evenly as possible through the whole puck.

You wake up, struggle out of bed, clean your teeth*, and get to the kitchen. What you want now is a delicious coffee without fuss or effort. What you don’t want now is a misbehaving grinder that results in a muddy brew while waking up the rest of the house.

Cleaning your Niche Duo will help keep it producing quality grinds time after time. Because the Duo retains virtually zero grinds, there’s no need to scrub it daily. However, a...