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WARNING: The information contained in this page is extremely useful. Reading all the way to the bottom puts you at serious risk of getting better brews with empirical water.

User Guide: GLACIAL

How to mix GLACIAL for Coffee

Note: Measure buffer using ONLY the 0.50 mL fill line for best accuracy.

Instructions

Prepare in a 1 liter bottle, or directly in your kettle.

  1. Add 50 mL (50 grams) GLACIAL Hardness.
  2. Add 0.5 mL (0.59 grams) GLACIAL Buffer.
  3. Optional: Add 0.5 mL (0.59 grams) Extraction Booster.
  4. Fill remaining capacity (950 grams or mL) with zero TDS water.

Alternatively, prepare in a 1 gallon container of your choosing:

  1. Add 190 grams GLACIAL Hardness.
  2. Add 1.9 mL GLACIAL Buffer.
  3. Optional: Add 1.9 mL Extraction Booster.
  4. Fill remaining capacity with zero TDS water.

Buffer Guide

As a starting point, use:

  • The default amount of Buffer for light roast coffee.
  • Double the amount of Buffer for medium roast coffee.
  • Triple the amount of Buffer for dark roast coffee .

For higher intensity and acidity, use less buffer. For lower intensity and acidity, use more buffer.

How to mix GLACIAL for Espresso

Note: Measure buffer using ONLY the 0.50 mL fill line for best accuracy.

Instructions

Prepare in a 1 liter bottle, or directly in your kettle.

  1. Add 50 mL (50 grams) GLACIAL Hardness.
  2. Add 1.5 mL (1.77 grams) GLACIAL Buffer.
  3. Fill remaining capacity (950 grams or mL) with zero TDS water.

Alternatively, prepare in a 1 gallon container of your choosing:

  1. Add 190 grams GLACIAL Hardness.
  2. Add 5.7 mL GLACIAL Buffer.
  3. Fill remaining capacity with zero TDS water.

How to mix GLACIAL for Tea

Note: Measure buffer using ONLY the 0.50 mL fill line for best accuracy.

Instructions

Prepare in a 1 liter bottle, or directly in your kettle.

  1. Add 50 mL (50 grams) GLACIAL Hardness.
  2. Add 0.5 mL (0.59 grams) GLACIAL Buffer.
  3. Optional: Add 0.5 mL (0.59 grams) Extraction Booster.
  4. Fill remaining capacity (950 grams or mL) with zero TDS water.

Alternatively, prepare in a 1 gallon container of your choosing:

  1. Add 190 grams GLACIAL Hardness.
  2. Add 1.9 mL GLACIAL Buffer.
  3. Optional: Add 1.9 mL Extraction Booster.
  4. Fill remaining capacity with zero TDS water.

For higher intensity and acidity, use less buffer. For lower intensity and acidity, use more buffer.

User Guide: SPRING

How to mix SPRING for Coffee

Note: Measure buffer using ONLY the 0.50 mL fill line for best accuracy.

Instructions

Prepare in a 1 liter bottle, or directly in your kettle.

  1. Add 100 mL (100 grams) SPRING Hardness.
  2. Add 1 mL (1.18 grams) SPRING Buffer.
  3. Add 1 mL (1.18 grams) Extraction Booster (optional).
  4. Fill remaining capacity (900 grams or mL) with zero TDS water.

Alternatively, prepare in a 1 gallon container of your choosing:

  1. Add 380 grams SPRING Hardness.
  2. Add 3.8 mL (4.72 grams) SPRING Buffer.
  3. Optional: Add 3.8 mL (4.72 grams) Extraction Booster.
  4. Fill remaining capacity with zero TDS water.

Buffer Guide

As a starting point, use:

  • The default amount of Buffer for light roast coffee and any tea.
  • Double the amount of Buffer for medium roast coffee.
  • Triple the amount of Buffer for dark roast coffee.

For higher intensity and acidity, use less buffer. For lower intensity and acidity, use more buffer.

How to mix SPRING for Tea

Note: Measure buffer using ONLY the 0.50 mL fill line for best accuracy.

Instructions

Prepare in a 1 liter bottle, or directly in your kettle.

  1. Add 100 mL (100 grams) SPRING Hardness.
  2. Add 1 mL (1.18 grams) SPRING Buffer.
  3. Add 1 mL (1.18 grams) Extraction Booster (optional).
  4. Fill remaining capacity (900 grams or mL) with zero TDS water.

Alternatively, prepare in a 1 gallon container of your choosing:

  1. Add 380 grams SPRING Hardness.
  2. Add 3.8 mL (4.72 grams) SPRING Buffer.
  3. Optional: Add 3.8 mL (4.72 grams) Extraction Booster.
  4. Fill remaining capacity with zero TDS water.

FAQ

What is zero TDS water?

TDS stands for Total Dissolved Solids. Zero TDS water is water that contains no minerals.

To dilute your empirical water concentrates into usable brew water, you'll need zero TDS water.

Where can I find the best zero TDS water?

Deionized - The best kind of zero TDS water. See this page for more info.

Distilled - Most grocery stores carry distilled water. Recommended brands: Arrowhead Distilled, Good & Gather Distilled (find at Target), Ice Mountain Distilled, more brand suggestions coming soon. There is quite some variance in distilled water quality, so please try a few different brands to find the one that tastes best.

Reverse osmosis - Technically low TDS, this can be a viable option; the lower the TDS, the better. If you have reverse osmosis available, do try it out in place of true zero TDS water. It can be used to make good brew water, even if it doesn't honestly represent the target mineral profile.

What is the shelf life of empirical water?

All of the concentrates in your order will stay fresh for about 6 months, until the expiration date on your Hardness bottle.

Is empirical water easy to brew with?

empirical water has a large sweet spot, courtesy of calcium carbonate. This makes it very forgiving to brew with.

Note: You may need to adjust your brew parameters to find that sweet spot initially, depending on your previous water. Once you find it, it's pretty hard to miss.

How should I store the water?

Store the water in a dark, dry, cool location.

Can I use empirical water in my espresso machine?

Yes, empirical water GLACIAL is espresso-friendly. Descale your machine after every 1000 shots pulled.

The SPRING and AQUIFER profiles are moderately-to-heavily scale-forming, so you will need to descale more often.

Do I need to descale my kettle?

empirical water GLACIAL is barely scale-forming. It's not necessary to ever descale your kettle when using this water. With the SPRING profile, you may choose to descale once in a while, but it's not required.

What makes empirical water different from other brewing waters on the market?

Check out this article.

How do I adjust the water for different roasts?

See the Buffer Guide in the User Guide higher up on this page.

How can I make a lot of brew water quickly?

Reuse the glass bottles as your 1 liter mixing bottle. Make several liters of brew water at once to save time. Alternatively, follow the 1 gallon instructions under the Default Instructions tab at the top of this page.

How do I manage my subscription?

Log into your account (top right corner), then click "Manage Subscriptions" under Account Details.

Can I drink the concentrates?

Dilute the concentrates into brew water according to the instructions higher up on this page. You can drink the brew water straight or use it to brew coffee/tea.

What's the refund policy?

Request a refund within 30 days of receipt. Send a submission on the contact page to receive a refund.

How does empirical water treat funky coffees?

empirical water is infamous for its ability to target clean sweetness, acidity and flavor notes without any unwanted funk.

Does empirical water ship for free?

Regular orders of empirical water ship for free to USA and Canada. For other countries, there is a flat rate of $29 regardless of order size.

What is the mineral composition of empirical water?

(See our World Class Testimonials!)

GLACIAL, v1.5

Harmonious, balanced, versatile.

TDS: 70 mg/L

 

SPRING, v1.1

Thick, resonant, concentrated.

TDS: 157 mg/L

Open Source Statement: These mineral profiles have been made open source for personal use. Feel free to follow the DIY instructions to make and modify these profiles for personal use only. For business purposes, innovate and discover your own profile in your own signature style.