What is a coffee blend?
A coffee blend is an assembly of beans from two or more different geographic origins, crafted by a roaster to create a coherent, stable and reproducible aromatic profile from one season to the next. Unlike single origin coffees which celebrate the uniqueness of a terroir and harvest, a blend seeks balance, consistency and often versatility across multiple preparation methods.
The blend is the historically dominant form of commercial coffee — branded Italian espressos are almost all blends of Arabica and Robusta, carefully formulated to produce dense crema, pronounced body and a stable profile regardless of lot or production season. The industrial roaster buys origins on the futures market and adjusts proportions in real time to maintain the target profile — a distinct and legitimate skill, separate from the pursuit of exception.
In specialty coffee, blends have a more ambivalent image. On one hand, specialty roasters create high-quality 'house blends', typically assembling 2 to 4 single-origin coffees individually scored at 82+ SCA points, to create a signature espresso with intentional complexity (e.g. body from Brazil + acidity from Ethiopia + sweetness from Colombia). These blends have a code name, often a story and detailed composition rationale. On the other hand, some actors use the term blend to mask lower-quality assemblies under careful marketing.
The 'single origin or blend?' question is often poorly framed: for espresso, well-designed blends often offer better result stability, less sensitivity to dialing-in variations, and a more accessible profile for lattes or flat whites where milk attenuates nuances. For filter coffee or cupping, single origin is generally preferred as it allows isolated exploration and identification of a terroir, variety or processing.
In Belgium, the vast majority of coffees served in restaurants, hotels and traditional bars are blends — often purchased at dark roast from Italian or Belgian traders. The rise of Belgian artisan roasters since the 2010s has introduced a new category of premium blends — assemblies of traceable single origins, roasted light to medium — that are beginning to establish themselves in gastronomic restaurants and wine bars like 20hVin in La Hulpe and La Cave du Lac in Genval.
Single origin vs blend: when to choose which?
| Criterion | Single origin | Blend |
|---|---|---|
| Exploration and learning | Ideal — pure terroir, no interference | Less suitable — mixed sources |
| Espresso extraction stability | Variable — sensitive to lot changes | High — attenuates variations |
| Latte/flat white versatility | Sometimes too delicate or acidic | Often more suitable |
| Traceability | High — identified origin | Variable — depends on roaster |
| Price per kg | Generally higher | Generally lower |
| Seasonality | Strong — profile changes with harvest | Attenuated — formulation adjustable |