Craft your water.
Compose the water behind your coffee — from a starting profile or from the coffee itself.
01 — Choose your profile
Choose your water composition.
Or go custom
Build your own mineral composition.
WATER COMPOSER
Not sure what water your coffee needs? Let TWA help.
📷 Scan your coffee bagor upload a photo⌄
WATER COMPOSER
Not sure what water your coffee needs? Let TWA help.
📷 Scan your coffee bag
Keep the bag inside the frame. We’ll crop it automatically.
Recipe is composed at 250 mL, then scaled to your brew volume.
02 — Brew volume
How much water?
Doses scale automatically with your brew volume.
03 — Water composition
What's in your water?
Estimated mineral and ion composition.
⌄
What's in your water?
Estimated mineral and ion composition.
04 — Brew
Ready to brew
Your water is composed. Now brew your coffee and see what changes in the cup.
Clarity
Best for Gesha, Ethiopian washed, and other high-elevation washed coffees.
For 250 mL distilled/RO water
MAG
5
drops
0.30 mL
Magnesium
CAL
2
drops
0.12 mL
Calcium
BUFFER
0
drops
0.00 mL
Buffer
Estimated TDS
50
ppm
Brew Water
250 mL Distilled/RO Water
Add the mineral doses above directly into your water.
1 drop ≈ 0.06 mL · Use the included syringe for mL dosing.
TDS readings are estimates.
Estimated TDS accuracy ±5 ppm. Our reference readings are based on the Xiaomi Mi TDS Tester used in our experiments. Different TDS meters may display different values due to calibration, temperature, and EC-to-TDS conversion factors. For the closest match to our recipes, use the same meter and measurement conditions.
