A Detailed Introduction to Coffee Bean Red Wine Processing Method: Historical Origins, Development, and Specific Operational Techniques

Colombia's Red Wine Process

Of all the coffee-growing regions on Earth, only a handful have successfully experimented with wine-style processing. After years of testing, the method can now control the acidity structure in coffee with real precision. Coffee fermented in a red-wine-like process shows dramatically enhanced sweetness and cleanliness, plus multi-layered, complex yet elegant acidity—a fermentation approach that meaningfully raises both the quality and the distinctiveness of the coffee.

The Red Wine Processing Method

The red wine process—also called the controlled fermentation method, or lactic/acetic acid fermentation—was developed by an experimental team led by American Felipe Sardi, made up of biological scientists and ecologists who applied technologies such as solar power to cultivation and green coffee processing.

A dedicated hand-picking team was trained to follow strict specialty coffee picking requirements: unripe fruit is rejected outright.

Acetic Acid Fermentation — Aerobic Fermentation

Lactic Acid Fermentation — Anaerobic Fermentation

Expected Flavor Profiles

Acetic acid fermentation: cleaner cup, vibrant acidity, brighter acid notes, citric acid character.

Lactic acid fermentation: rounder mouthfeel, slightly less clean than the acetic version, higher body, malic/tartaric acid character.

Traditionally, mills relied on manual know-how passed down through generations—such as biting a bean to judge fermentation degree—an approach that was uncontrolled and inconsistent.

The controlled fermentation method instead monitors fermentation by tracking pH values, delivering predictable results and consistent batch production.

Product Name: FrontStreet Coffee Colombia Red Wine Process Coffee

Origin Information: eastern foothills of the Andes, Quindío Department, Colombia. Growing altitude 1,800-2,000 meters, average temperature 16°C, high green-bean density—this is a bean that demands a higher standard of roasting.

Flavor: maple syrup sweetness with a malt-sugar note, vibrant citric acidity and creamy body, persistent sweet aftertaste, clean finish.

Roast Level: medium roast

Packaging: one-way degassing valve

Package Unit: half-pound package

Brewing Recommendations: pour-over, siphon, flannel (cloth) filter

Pour-Over Brewing Recommendations

Water Temperature: 90-95°C

Grind Size: setting 3

Coffee-to-Water Ratio: 1:16 (15g coffee to 240g water)

Grind size is referenced to the Yang's Small Pegasus grinder. The values above are reference suggestions—adjust to your actual brewing conditions and personal taste.

Roasting Notes

This FrontStreet Coffee Colombia Joaquín red wine process lot is fermented using the special red wine method: after the fruit pulp is removed and the beans washed clean, they ferment in a water-free (sealed) fermentation tank for 20.6 hours, then dry on raised racks for 10 days in the sun. The distinctive flavors this unique process produces are absolutely worth trying!

Coffee Bean and Origin Information

Country: Colombia

Estate: JOAQUIN

Altitude: 2,100 meters

Variety: Typica/Caturra

Processing Method: red wine process

Cupping Score: 89 points

Source: Internet

FrontStreet Coffee Recommendation

If controlled fermentation intrigues you, FrontStreet Coffee recommends two more Colombian coffees that showcase innovation in the cup:

FrontStreet Colombia Huila (Washed) — from Huila, the country's most famous specialty coffee region in the southern central Andes: hill country above 1,500 meters where Colombia's most important rivers converge, bringing abundant water. Medium-dark roasted to highlight dark chocolate and nutty sweetness, with moderate crema and a full body—great for pour-over and French press, and equally capable of feeding a moka pot or espresso machine for Americanos and lattes.

FrontStreet Colombia Pink Bourbon, Frontera Estate (Anaerobic Natural) — a new-wave take on low-oxygen fermentation: sealed pressure-rated stainless tanks where temperature, time, pH, and other variables are controlled precisely. After anaerobic fermentation converts more of the fruit into tropical aroma, this medium-light roasted coffee delivers passion fruit, grape, apricot, and dried-fruit complexity whether brewed as pour-over, cold brew, drip bag, or moka pot.