Rarities – Lactic & Milk Co-Ferment – Colombia – Filter

In fragrance, condensed milk and coconut, with pronounced lactic notes of condensed milk, butter, cacao, and cookies, a juicy and creamy body, medium-high lactic acidity and an overall fresh, floral character with hints of ripe dark berries and sweet tropical fruit.

Produced using a fermentation process involving dairy.

one-and-a-half-coffee-beans

Grind Guide

Info

Country
Colombia
Location
Santandar
Producer
John Rodriguez
Process
Co-Fermented with Milk
Cultivar
Caturra
Altitude
1800 – 1910 masl
Harvest
May – December
Country
Colombia
Location
Santandar
Producer
John Rodriguez
Process
Co-Fermented with Milk
Cultivar
Caturra
Altitude
1800 – 1910 masl
Harvest
May – December

An exceptionally rare, unique and experimental coffee, unlike anything we have ever tasted. Best brewed slowly to highlight its delicate sweetness and intricate layers, we recommend pour-over or immersion methods that allow every note to unfold.

As amazing as it tastes, we don’t suggest putting this one anywhere near your espresso machine!

Body

Medium

Acidity

High

Tasting notes

Condensed Milk, Coconut & Floral

Roast level

Light

Filter

For consistent results, we recommend brewing with measured inputs rather than estimating by eye. Always use a digital scale to weigh both your coffee dose and water. As a baseline, use a brew ratio of 60–70g of coffee per litre (1000g) of water. This range can be adjusted depending on the brewing method, water composition, and the specific coffee you’re working with. Control your variables, make small adjustments, and use taste to guide your final recipe.

Espresso

Consistency in espresso comes from working within the parameters of your equipment. Use the dose recommended for your basket (usually marked on the side or provided by the manufacturer) and keep it consistent. As a starting point, aim for a brew ratio of around 1:2 — for example, 18g of coffee yielding 33–35g of espresso in the cup. Target an extraction time of 22–30 seconds, with a brew water temperature between 93–95°C. From there, adjust grind size to control flow and use taste to fine-tune the result.

For method-specific guidance, you can find all of our brew guides here.

John Rodriguez – Caturra De Leche

The Caturra de Leche coffee is developed through a controlled co-fermentation process, in which two independent fermentations are carried out: a lactic fermentation and an yeast fermentation. Both processes are conducted separately and then later combined to form the final coffee profile.

 

Lactic fermentation
The lactic fermentation is carried out using lactic acid bacteria previously isolated from the same coffee during earlier microbiological processes.

 

This stage takes place under anaerobic conditions (absence of oxygen) to favour the activity of lactic bacteria. During this phase, milk is added, which contributes to the development of compounds that enhance the formation of lactic acid and aromatic precursors, resulting in creamier and more complex sensory profiles.

Yeast fermentation
The yeast fermentation is carried out using yeasts of the species Saccharomyces cerevisiae, also previously isolated from the same coffee.

 

This process takes place over approximately 3 days in plastic containers (drums), where the yeasts transform the sugars present in the coffee mucilage into alcohols, esters, and other aromatic compounds that contribute to the development of the sensory profile.

 

Integration of the processes
Once both fermentations are completed, the two processes are carefully blended, allowing the aromas and flavours developed in each fermentation to interact. This integration helps create a distinctive sensory profile characterised by milky notes, sweetness, and complex fermentative characteristics.

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Grind Guide

Whole Bean

Always the best choice. Grind at home for maximum freshness and full control over your coffee.

Cafetiere Ground

Our coarsest grind. Ideal for Cafetiere, Chemex, Cold Brew, and Batch Brew.

Filter Ground

Works well for cone brewers like V60, and flat-bottom brewers like Kalita or other pour-over brewers.

Moka Ground

A finer grind suited to Moka pots, AeroPress, and most domestic espresso machines with pressurised baskets.

Espresso Ground

Very fine and intended for commercial espresso machines. For best results, grinding fresh is recommended.