September Coffee - Letty Bermudez, Anaerobic Thermal Shock

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Additional information

Coffee Details

Country of Origin: Colombia
Region: Cauca
Varietal: Geisha
Process: Washed

Roast Level: Ultra-Light
Producer: Alex Bermudez
Farm: Finca El Paraiso
Altitude: 1930 masl

What to expect

In the cup you can find

Peach Candy, Oolong Tea, Floral

Overall profile

A sweet, floral Geisha with intense Peach Candy and delicate Floral notes.

Sensory profile

Acidity: 4/5
Body: 2/5
Sweetness: 5/5
Funk: 1/3
Adventurous: 4/5

About September Coffee Co.

September is an Ottawa roastery founded by Kyle and Natasha Rowsell. Its light roasts bring out natural sweetness, lively acidity and a silky texture, with coffees chosen for both clarity and character. From clean, familiar cups to unusual varieties and experimental processing, each release puts the producer’s work...

Shop all September coffees

Details:

Origin: Colombia — Cauca, Piendamó
Producer: Diego & Alex Bermudez (Finca El Paraiso)
Varietal: Gesha/Geisha
Process: Double Anaerobic + Thermal Shock Washed
Elevation: ~1,930 m above sea level
Harvest: Late 2025
Roast: Light
Bag Size: 200 g
Tasting Notes: Peach Candy 🍑 • Floral 🌼 • Citrus Zest 🍋 • Oolong‑like subtlety

Intro:

September is thrilled to present Letty Bermudez Colombia Gesha, a truly expressive and sweet single‑origin coffee named in honour of Diego Bermudez’s daughter. This exceptional Geisha lot brings together intense tropical sweetness, delicate floral aromatics, and crisp citrus brightness, all amplified through innovative processing that pushes the boundaries of washed coffee expression.

The Producer:

This coffee is from Diego & Alex Bermudez of Finca El Paraiso in the Cauca region of Colombia, producers widely known for their experimental and highly precise fermentation work. Diego is recognised in specialty coffee circles for pushing processing techniques — using controlled bio‑reactor fermentations with strict monitoring of temperature, pH, sugar levels, and microbial cultures to drive complex flavour development. Their commitment to innovation has positioned them as leaders in coffee processing science.

The Process:

Letty Bermudez uses a Double Anaerobic + Thermal Shock Washed process: cherries are harvested at peak ripeness with high sugar content, then fermented under both aerobic and anaerobic conditions with selected tropical yeasts to enhance fruit complexity. After mucilage breakdown, beans undergo a thermal shock wash — rapid temperature fluctuations to “fix” flavours — followed by careful drying in controlled conditions to preserve delicate notes and prevent over‑oxidation. This process results in a cup that is both structured and exquisitely sweet.

The Cup:

In the cup, Letty Bermudez is an elegant and richly layered Gesha. The first impression is intense peach candy sweetness 🍑 — reminiscent of juicy, sugar‑kissed fuzzies — balanced by bright citrus zest 🍋 and delicate floral 🌼 aromatics. Subtle oolong‑like nuance adds tea‑like complexity and depth, yielding a finish that is long, refined, and deeply satisfying.

Overall:

September’s Letty Bermudez Colombia Gesha is a standout expression of what modern processing can achieve with one of coffee’s most revered varietals. With its peach candy sweetness, floral finesse, and crisp citrus lift, this coffee delivers a memorable and nuanced filter experience that celebrates both terroir and technical creativity — perfect for lovers of vibrant, nuanced specialty coffee.