THE WATER ARTIST
Coffee Water Journal
Exploring the science, sensory experience and craft of brewing water for specialty coffee.
Coffee Water Fundamentals
6 min read
What Is the Best Water for Specialty Coffee?
There is no single best water for specialty coffee. Learn how minerals, hardness, alkalinity and water composition influence the way coffee expresses itself.
Coffee Water Fundamentals
8 min read
How Water Affects Coffee Extraction — And What We Still Don't Know
Does mineral water extract more coffee? Explore what research says about calcium, magnesium, alkalinity and the chemistry of coffee brewing water.
Coffee Water Fundamentals
12 min read
The Coffee Water Ion Atlas: How Individual Ions May Shape the Cup
Explore calcium, magnesium, sodium, potassium, bicarbonate, chloride, sulfate, phosphate and citrate in coffee water.
Coffee Water Fundamentals
8 min read
What Does TDS Actually Mean for Coffee Brewing?
TDS is one of the most common numbers in coffee. Learn what TDS measures, what it doesn't, and why water composition matters beyond the number.
Coffee Water Fundamentals
8 min read
Calcium vs Magnesium in Coffee Water: What's the Difference?
Calcium and magnesium are two of the most discussed minerals in coffee water. Learn what research says, what sensory work suggests, and why they shouldn't be treated as simple extraction controls.
Coffee Water Fundamentals
8 min read
What Is Alkalinity in Coffee Water?
Alkalinity is one of the most important but misunderstood properties of coffee water. Learn how bicarbonate, buffering and alkalinity influence acidity and balance.
Coffee Water Fundamentals
8 min read
Coffee Water Hardness Explained: GH, Calcium & Magnesium
What is water hardness, and why does it matter for coffee? Learn about GH, calcium, magnesium and how hardness differs from alkalinity and TDS.
Brewing & Water
7 min read
Why Does the Same Coffee Taste Different With Different Water?
The same coffee, recipe and grinder can taste different when brewed with different water. Here's why water deserves to be treated as a brewing variable.
Brewing & Water
9 min read
How to Make Your Own Coffee Brewing Water
A practical guide to making coffee brewing water from distilled or RO water, choosing a mineral profile, checking TDS and tasting the result.
Brewing & Water
10 min read
Coffee Water Recipes: How to Build Water for Different Coffees
Coffee water doesn't need one universal recipe. Learn how to build a starting water profile around the coffee, roast style and expression you want.
Brewing & Water
9 min read
Does Magnesium Really Extract More Coffee?
Magnesium is often described as the extraction mineral of coffee. But does more magnesium actually mean more extraction? Here's what the research tells us.
Brewing & Water
8 min read
Why Water Composition Matters More Than TDS
Two waters can have the same TDS and behave differently in coffee. Learn why ionic composition, hardness and alkalinity give TDS its meaning.
AeroPress Competition
9 min read
What Is the Best Water for AeroPress?
AeroPress competition recipes show that brewers actively control water composition. Learn how to think about water for AeroPress without chasing a single magic number.
AeroPress Competition
10 min read
AeroPress Water Recipes: How to Build Water for Competition
Learn how to approach AeroPress competition water by designing mineral profiles around clarity, sweetness, balance and the coffee itself.
AeroPress Competition
9 min read
How Water Changes AeroPress Extraction
AeroPress gives brewers unusual control over immersion, agitation and bypass. Here's how water fits into that extraction system.
AeroPress Competition
10 min read
What Can We Learn From World AeroPress Championship Water Recipes?
World AeroPress Championship recipes provide a fascinating look at how elite brewers use water. Here's what the recipes can — and cannot — tell us.
AeroPress Competition
8 min read
Why Competition AeroPress Recipes Use Bypass Water
Bypass water is more than dilution. Learn why AeroPress competitors use it, how it changes brew strength and why the bypass water itself matters.
AeroPress Competition
10 min read
How to Prepare Competition Water for AeroPress
A practical framework for preparing consistent AeroPress competition water, from the base water and mineral profile to TDS checks and tasting.
AeroPress Competition
8 min read
Does 100–130 ppm Make Better AeroPress Coffee?
Some competition AeroPress recipes use water around 100–130 ppm. Does that mean higher TDS makes better coffee? The answer is more interesting.
Brewing & Water
9 min read
The Best Water for V60: What Should You Actually Use?
V60 is highly sensitive to brewing variables. Learn how water composition, alkalinity and mineral balance can fit into a controlled V60 recipe.
Brewing & Water
9 min read
Coffee Water for Espresso: Why Espresso Needs a Different Approach
Espresso puts coffee, water, heat and pressure together in a concentrated system. Here's why espresso water deserves its own approach.
Brewing & Water
8 min read
The Best Water for Cupping Coffee
Cupping is about evaluating coffee fairly. Learn why water consistency, alkalinity and mineral composition matter when comparing coffees.
Water Experiments
10 min read
Same Coffee, Four Waters: A Controlled Brewing Experiment
A practical experiment for testing how four different water profiles change one coffee while keeping every other brewing variable constant.
Water Experiments
9 min read
MgCl₂ vs MgSO₄: Same Magnesium, Different Salt
Magnesium chloride and magnesium sulfate both add magnesium, but they also add different counter-ions. Here's why that matters in coffee water.
Water Experiments
8 min read
60 ppm of What? Comparing Two Waters With the Same TDS
Two coffee waters can measure the same TDS and still have different chemistry. Here's a simple experiment for understanding why.
Water Experiments
9 min read
High Magnesium vs High Calcium: What Actually Changes in the Cup?
Magnesium and calcium both contribute to hardness, but they are not interchangeable. Here's a controlled way to compare their sensory effects.
Water Experiments
9 min read
Low vs High Alkalinity: What Happens to Coffee Acidity?
Alkalinity can strongly influence how coffee acidity is perceived. Here's a controlled experiment comparing low and higher-buffer water.
THE WATER ARTIST
Water is the canvas.
You're the artist.
Learn how water composition can become another variable in your coffee brewing process.
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