CARBONIC MACERATION
You've seen it on the bag. Maybe it's why you grabbed it. Maybe it's why you hesitated. Carbonic maceration sounds like something from a chemistry class, not your morning cup. But the idea behind it is simple, and once you get it, you'll understand exactly what you're tasting.
IT STARTED WITH WINE
Carbonic maceration isn't a coffee invention. Winemakers in Beaujolais, France have been using it for decades to make wines that are bright, fruity, and easy to drink. The most famous example is Beaujolais Nouveau.
Here's how it works in wine: instead of crushing grapes and letting them ferment in open air, whole uncrushed grapes are sealed inside a tank filled with carbon dioxide. Without oxygen, the fermentation starts inside each individual grape. The grape ferments itself from the inside out before anything breaks the skin.
The result is wines that taste more like fresh fruit, candy, and flowers than earthy or heavy ones.
SO WHAT DOES THAT HAVE TO DO WITH COFFEE?
Coffee producers noticed what winemakers were doing and started experimenting. The basic idea translates well.
Coffee cherries (the whole fruit that contains the bean) are sealed inside airtight tanks filled with carbon dioxide. Just like with grapes, fermentation starts inside the fruit itself. The environment in the tank is carefully controlled: temperature, CO₂ levels, and how long the cherries sit.
After anywhere from a few hours to a few days, the cherries come out and are processed the rest of the way. The fruit is removed and the beans are dried.
What happened inside those tanks gets locked into the bean. You taste it later in your cup.
WHAT DOES IT ACTUALLY TASTE LIKE?
Carbonic maceration tends to push certain flavors forward in a way that more traditional processing doesn't. You'll often notice:
- Juicy, wine-like fruit like red berries, stone fruit, and tropical notes
- Sweetness that feels candy-like or syrupy
- Floral aromas that hit you before the coffee even reaches your lips
- A clean, smooth body without a lot of heavy or earthy weight
Some people try a carbonic maceration coffee and say it doesn't taste like coffee at all. That's not a bug. It's the whole point.
IS IT BETTER THAN REGULAR PROCESSING?
That's not really the right question.
Carbonic maceration is a tool, not a prize. It's one way a producer can take a high-quality coffee and push its character in a specific direction. A well-grown bean processed this way can be extraordinary. But the process can't rescue a mediocre crop. It just turns up the volume on whatever's already there.
It's especially interesting with coffees that already have complex fruit or floral genetics, like Ethiopian varieties or some of the newer hybrid cultivars coming out of Central America.
WHY YOU'LL SEE IT HERE
At Experimental, we work with producers who treat processing as part of the craft, not just a way to get the bean from the cherry to the bag. When we carry a carbonic maceration coffee, it's because the producer had a reason for it. The terrain, the variety, and the flavor vision all pointed in that direction.
We'll always tell you what we know about how a coffee was processed and why. Context makes coffee more interesting.
If you've got one of our carbonic maceration coffees in hand right now, try it as a pour over or filter brew first. Give it a few minutes to cool slightly. That's when the fruit really opens up.
Have questions about processing or want to know more about what makes our coffees taste the way they do? Drop us a message. We love this stuff.