Anaerobic, carbonic maceration, extended fermentation. Producers pushing the boundaries of what coffee can taste like.

More information about our Experimental Fermentation Coffees collection.

Coffee fermentation has opened up possibilities that didn't exist in conventional processing. By controlling temperature, humidity, and microbial activity during fermentation, producers can create flavor profiles that range from subtle complexity to bold intensity. It's not gimmicky when it's done thoughtfully. It's coffee at the edge of possibility.

These are coffees made by producers willing to experiment, to fail sometimes, and to push what coffee can taste like. We source anaerobic, carbonic maceration, and extended fermentation lots, methods covered in our coffee processing guide from producers who approach the process scientifically, not just as novelty. The results are coffees that taste deliberately crafted, not accidental.

Experimental coffees demand attention. They're not for every morning. But they're extraordinary for tasting through slowly, for understanding what's possible when production gets curious.

Currently available are anaerobic Geisha and Catuai lots with complex fermentation profiles, coffees that taste unlike anything in our conventional lineup. These are coffees that redefine what you thought coffee could be.

The Coffee Journey

Explore all that goes into your morning cup

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Variety

Coffee Varieties Guide

Like apples, coffee has thousands of varieties with unique flavors. Explore Arabica cultivars from Gesha to Bourbon and how genetics shape your perfect cup.

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Origin

Coffee Terroir Guide

Origin is one of three pillars determining coffee's taste, alongside roasting and brewing. From variety selection to elevation, processing to country culture, every decision at origin shapes your cup. Here's how terroir transforms seeds into distinctive flavors.

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Processing

Coffee Processing Guide

How specialty coffee goes from cherry to green bean—hand-picking, sorting, fighting pests and disease, and the processing methods that shape flavor.

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Roast

Coffee Roasting Overview

Coffee roasting isn't just about turning beans brown—it's a complex process of chemistry, timing, and heat that creates over 800 flavor compounds from a simple green seed. Understanding this transformation reveals why your morning cup tastes the way it does.

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Brew

Coffee Brewing Basics

Everything that goes into great coffee comes down to the brew. Here's what matters most: grind size, water temperature, and brewing method.

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