Ethiopia | Mate Mathios | Anaerobic Natural - River submerged | Jarc 74158

Ethiopia – Mate Mathios | River Submerged – 200g

Origin: Bura Woreda, Keramo Kebele, Ethiopia
Producer: Mate Mathios
Variety: 74158
Elevation: 2,300 meters above sea level
Process: Anaerobic Fermentation – River Submerged
Harvest Period: Dec 2025 – Jan 2026
Species: Arabica

About the Producer

Mate Mathios produces coffee in Bura Woreda, Keramo Kebele, an area renowned for producing distinctive high-altitude Ethiopian coffees.

Working at an elevation of around 2,300 metres above sea level, Mate focuses on producing high-quality Arabica with an emphasis on careful cultivation and innovative processing.

This coffee has been processed using the distinctive River Submerged method, helping to emphasise the delicate and highly aromatic character of the coffee. The result is an exceptionally perfumed cup, combining expressive florals with soft, confectionery-like sweetness.

Tasting Notes

A highly perfumed and delicate Ethiopian coffee, combining expressive florals with soft confectionery sweetness. Jasmine and lavender create an elegant aromatic character, balanced by soft blueberry sweetness.

• Jasmine: Delicate, elegant floral character
• Lavender: Fragrant, aromatic and gently perfumed

• Blueberry: Soft, sweet and confectionery-like

The River Submerged Process

This coffee has undergone a distinctive anaerobic fermentation process known as River Submerged.

• Cherry Selection: Ripe coffee cherries are carefully harvested and selected for processing.
• Submersion: The fresh cherries are sealed inside bags and submerged in cold stream water for approximately four days.
• Anaerobic Fermentation: The cold, oxygen-limited environment creates a slow and controlled fermentation, allowing distinctive flavours and aromas to develop.
• Shade Drying: Following fermentation, the cherries are spread beneath a shade net and dried slowly for approximately 30 days.

• Dry Milling: Once sufficiently dried and stabilised, the coffee is transported to SMS Dry Mill in Addis Ababa for milling.

This unusual combination of cold-water submersion, anaerobic fermentation and slow shade drying helps preserve the coffee's delicate aromatics while encouraging its distinctive floral and sweet character.

Brewing Recommendations

This coffee is best suited to brewing methods that allow its delicate aromatics and floral character to shine:

Filter (Pour-Over / Drip): Highlights the jasmine and lavender aromatics, with soft blueberry sweetness developing as the coffee cools.

Aeropress: Creates a silky, fragrant cup with pronounced floral character and gentle confectionery sweetness.

Espresso: Produces a concentrated and aromatic expression, with floral notes balanced by soft blueberry sweetness.

Perfect for

Coffee lovers who enjoy delicate, highly aromatic and floral Ethiopian coffees, particularly those interested in exploring distinctive fermentation techniques.

An exceptionally perfumed expression of high-altitude Ethiopian Arabica, combining the character of Keramo with the innovative River Submerged process.

📦 Order Now – A beautifully perfumed Ethiopian coffee from Mate Mathios, carefully processed using the distinctive River Submerged method to create layers of jasmine, lavender and blueberry sweetness.