Skip to content

Three Keys Coffee
    • Shop All
    • Coffee
    • Gift Cards
    • Merch
    • Our Story
    • Impact
    • Flavor Wheel
    • FAQ
    • Blog
    • Finn Hall Coffee Bar
    • Roastery Bar
    • Three Keys Near You
  • Coffee Catering
  • Wholesale Ordering
  • Direct Wholesale
  • Contact
  • Log in
  • Create account
Three Keys Coffee
    • Shop All
    • Coffee
    • Gift Cards
    • Merch
    • Our Story
    • Impact
    • Flavor Wheel
    • FAQ
    • Blog
    • Finn Hall Coffee Bar
    • Roastery Bar
    • Three Keys Near You
  • Coffee Catering
  • Wholesale Ordering
  • Direct Wholesale
  • Contact
Log in
Search our site
Access Denied
IMPORTANT! If you’re a store owner, please make sure you have Customer accounts enabled in your Store Admin, as you have customer based locks set up with EasyLockdown app. Enable Customer Accounts

Frequency: The Fermentation Tasting Project

Regular price $48.50
 
 
Added to Cart! View cart or continue shopping.

FREQUENCY

The Fermentation Tasting Project — Three Keys Coffee × James Hoffmann

PRE-ORDER: Roasting Sept 12-15; Shipping Sept 16-18.

One coffee. Four fermentation paths. Same farm, same variety, same 48-hour window — only the fermentation itself changes. The result: Acoustic, Live, Treble, Bass — four expressions of a single Guatemalan lot.

🎧 Global live tasting with James Hoffmann — Saturday, October 3, 2026, ~9:00 AM Central

ACOUSTIC LIVE TREBLE BASS

ACOUSTIC

Mechanically Demucilaged · WASHED

The coffee, stripped back. Washed process. This is the reference point for everything else. That makes Acoustic our control: the closest look at the coffee before fermentation begins shaping its flavor.

Think of it as an acoustic performance: no added effects, just the source material.

LIVE

Wild Fermentation · 48 Hours

Live undergoes a 48-hour fermentation driven by the naturally occurring microorganisms already present in the coffee's environment.
There is no selected bacteria or yeast added to direct the process. Instead, the local microbial community does what it has traditionally done in coffee processing: consumes sugars in the mucilage and produces compounds that can influence what we eventually experience in the cup.

That's why we call it Live: the same source material, shaped by the energy and unpredictability of a live performance.

TREBLE

Lactobacillus Inoculated · 48 Hours

The coffee is intentionally inoculated with Lactobacillus, bacteria known for producing organic acids during fermentation. Those acids can influence how we perceive brightness, acidity and complexity in the finished coffee, bringing certain characteristics forward with greater definition and lift.


We call it Treble for what happens at the high end: brightness turned up.

BASS

Saccharomyces Yeast Inoculated · 48 Hours

Inoculated with selected yeast for fuller body and layered complexity. The coffee is fermented for 48 hours with selected Saccharomyces yeast. During fermentation, the yeast produces compounds and flavor precursors that can influence the coffee's eventual sensory profile, particularly its body and complexity.

We call it Bass for the weight, depth, and texture. 


HOW TO TASTE

  1. Acoustic — your reference point, washed process
  2. Live — what changes when fermentation begins
  3. Treble — brightness, acidity, complexity
  4. Bass — body, depth, texture

Then go back — Acoustic beside Treble, Live beside Bass. The point isn't which is "best." It's discovering what fermentation actually tastes like.


Variety ~85% Caturra, ~15% H1, small amount Bourbon
Farm Finca San Miguel Urias — Hector & Lilian Leal, Rueda Farms
Location Antigua Valley, Guatemala
Altitude 1460–1540 masl
Included 4 × 100g bags (400g total) — one of each
Invalid password
Enter
Three Keys Coffee

Navigation

  • Account Login
  • Cafe Order To-Go
  • Contact Us
  • Privacy Policy
  • Terms of Service
  • Return Policy
  • Wholesale Services

Newsletter

© 2026, Three Keys Coffee.

Powered by Shopify

Accepted Payments

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa
  • Choosing a selection results in a full page refresh.
  • Press the space key then arrow keys to make a selection.