The Coffee Water Handbook

Your coffee is nearly all water. This is the two-page handbook for getting that part right without a chemistry degree.

Who this is for: anyone whose beans taste great at the cafe and flat at home, and machine owners who want to stop scale before it starts. Who it is not for: if your tap already tastes clean and your coffee already tastes good, keep brewing and keep your $9.

What is in the handbook, 2 print-ready pages, instant PDF download:

• Why water decides the cup: hardness and buffer explained in plain language
• The three water strategies (mineral packet + distilled, blending tap with distilled, filtered tap) with a decision table matching each to your setup and budget
• The ten-minute hardness test walkthrough using cheap aquarium strips, plus the utility-report shortcut
• Machine protection cadences by water hardness, built around your manual's descale schedule
• The myth table: vinegar descaling, boiling to soften water, salt softeners, bottled spring water, straight distilled, and more, each answered honestly

The math: a single descale kit costs about what this handbook does, and the handbook is how you buy fewer of them.

If it is not useful, reply to your receipt and we refund it, no forms.

Pre-launch ordering: the shop register opens soon; until then order this by invoice via the contact page with the product name as the subject. You will receive a PayPal or bank invoice and delivery within 2 business days of payment.

Goes well with: the Descale Schedule Generator and the Machine Maintenance Calendar. Related reading: Best Water for Coffee Brewing.