K-Supreme

Keurig

American pod brewer, the office-coffee standard at home.

Keurig K-Supreme

A single-serve drip machine that brews through a sealed pod. Fast, mess-free, and weak by default - most of which the settings can fix.

Roast	Grind	Coffee	Water	Time
light	fixed (sealed pod)	10 g	180 ml	1:15
medium	fixed (sealed pod)	10 g	180 ml	1:10
dark	fixed (sealed pod)	10 g	180 ml	1:05

Makes one 180 ml cup. The figures above are the whole recipe.

What goes wrong

Using the largest brew size (10g of coffee through 300ml, thin and papery), ignoring the Strong setting (default flow is too fast for a shallow pod), clogged spray needles (uneven wetting, weak), skipping descaling (brew temperature drops, sour)

Care schedule

2 tasks for this machine.

Replace the water filter

Every 2 months

The cartridge in the tank is what keeps scale off the element between descales. An exhausted one stops filtering and starts shedding - carbon fines, and whatever it has been holding onto.

What you need

The correct cartridge for your machine - Breville BWF, Jura CLARIS, DeLonghi or Philips AquaClean, Keurig charcoal, or the maker's equivalent. A jug of water for soaking.

What goes wrong

Skipping the soak, then wondering why the pump rattles and runs dry. Forgetting to reset the counter. Treating the filter as a replacement for descaling. Leaving an exhausted cartridge in for months, which is worse than running no filter at all.

The procedure

Match the cartridge to the machine. These are not interchangeable between brands, and a forced fit leaks past the seal instead of filtering.

4 more steps

The full procedure is in the app, along with a reminder when this is next due. Add the K-Supreme to your shelf and it keeps track.

Get the app

Descale the machine

Every 6 months

Pod machines have a small thermoblock and a narrow water path, so scale shows up as a weak, slow, spluttering extraction long before anything actually breaks.

What you need

The maker's descaling kit, or citric acid at about 10g per litre if the manual allows it. A container for the output.

What goes wrong

Descaling with a capsule loaded. Using undiluted vinegar, which perishes the small internal seals these machines use. Rinsing with one tank instead of two. Treating a blocked pod-piercing needle as scale when it is dried coffee - that needs a paperclip, not descaler.

The procedure

Eject any capsule and empty the drip tray and capsule bin.

4 more steps

The full procedure is in the app, along with a reminder when this is next due. Add the K-Supreme to your shelf and it keeps track.

Get the app