Coffee Rock™

You've got Coffee Rock.

Mineral-precise dosing for every cup. Your vial, your beans — here’s how to dial in.

Coffee Rock minerals in a vial.

The recipe

  • ●1 litre of RO or distilled water
  • ●1.5 mL per litre — light roast (especially fermented beans)
  • ●2.0–2.5 mL per litre — natural processed beans

Shake well and brew. Adjust to taste — the full dosing guide is below.

Formulation

Six parts magnesium to one part calcium — the ratio Bluewater designed specifically for coffee.

Coffee Rock

The dosing guide.

Add to 1 L of RO or demineralised water. All doses are per litre.

Mg 6 : Ca 1 · 1 mL = 1 g

Bean type

  • Arabica1.5 – 3.0 mL/L
  • Arabica / Robusta blend3.5 – 4.5 mL/L

Roast profile

  • Light roast1.5
  • Light-medium roast1.5 – 2.0
  • Medium roast2.0 – 3.0
  • Medium-dark roast3.0 – 3.5
  • Dark roast3.5 – 4.5

Process

  • Washed2.0 – 3.0
  • Natural1.5 – 2.5
  • Honey1.5 – 2.5
  • Pulped natural1.5 – 2.0

Post-harvest treatment

  • Carbonic maceration1.5
  • Anaerobic fermentation1.5
  • Extended fermentation1.5 – 2.0
  • Yeast-inoculated fermentation1.5 – 2.5
  • Traditional aerobic fermentation1.5 – 2.5

Magnesium

Brightness, fruit clarity, sweetness.

Calcium

Body, mouthfeel, finish.

These are starting suggestions for the brewer to dial in from. Bluewater is not accountable for personal sensory experience based on these recommendations.

Want it automated?

Brew. Espresso. Dialed in.

Café Station 1™ doses Coffee Rock into every cup automatically — no measuring, no math. Same recipe, hands-free.

Bluewater

Pick your roast.

Mineral-precise dosing, dialed in for your beans.

Dosage1.5 mL/L
1.54.5

Volume

330 ml500 ml1000 ml1500 ml
Coffee Rock dosing preview, auto-playing through roast recommendations.

Try it yourself

Dial in to suit your beans.

Two modes. One slider. Find the dosage that brings out every note.

9:41·····

Bluewater

Espresso · 2.0

Single shot · Double · Ristretto

Dosage2.0 mL/L
1.52.5

How it works

Same consistency. Every time.

From purified base to perfectly mineralized cup — in two steps.

Pure purified water before mineralization

Pure

Start every cup from a blank canvas — RO or distilled water, free of taste-altering contaminants.

Perfectly mineralized water with Coffee Rock minerals dosed at a 6:1 ratio
6:1 ratio

Perfect

Add Coffee Rock — calcium and magnesium dosed in a 6:1 ratio for clarity, body and finish.

Café Station 1 — connect liquid minerals to your coffee machine.

Café Station 1™

For the first time you can connect liquid minerals to your machine for perfect flavour extraction.

Learn more