Single-origin espresso uses coffee from a defined origin rather than a multi-origin blend. The definition of that origin can vary—from a country to an individual farm or lot—so the label is most useful when the seller explains its scope. CoffeeBox's guide considers how processing influences the flavour of coffees prepared as espresso.
The source's historical tasting discussion includes several fermentation-led coffees among its successful samples. That selection does not prove anaerobic processing is necessary for good espresso or that it always reduces acidity. Roast development, water, grinder performance and extraction all affect how sweet, sharp or textured the cup becomes.
An 18-gram dose and 36-gram beverage is a convenient 1:2 starting example, not a compulsory recipe. Record dose, yield, grind and taste, then adjust systematically. Lighter roasts may need a different approach from fuller roasts, and adding milk remains a preference rather than a rule violation. Use the lot information to guide curiosity and the actual cup to guide the next adjustment.
The conversation
A good question can make a better brew.