Single origin vs blend: which bag should you buy?
The shelf at every specialty roaster gives you the same choice. Here is the difference, what each does well, and how to choose without overthinking it.
Walk into any specialty roaster and you will see two categories of bag on the shelf. One side says "single origin" — usually with a country, a region, a farm name and tasting notes that read like a wine list. The other side says "blend" or "house" or "signature" — usually with notes like chocolate, nuts, caramel. They cost roughly the same. They look the same. They are doing very different jobs.
What a single origin actually is
Single-origin coffee comes from one place — one farm, one region, one co-op — and is sold as that specific lot. Because nothing is mixed in, the cup tastes of that place: the soil, the altitude, the processing method. A washed Ethiopian Yirgacheffe will be floral, citric, tea-like. A natural Brazilian will be heavy, sweet, chocolatey. A washed Kenyan will be bright, juicy, blackcurrant. The flavour is specific and the differences between single origins are large.
This is what most people want from filter coffee. The whole point of a V60 or Aeropress or Chemex is to let the bean speak; a single origin is what speaks most clearly through them.
What a blend is for
A blend is a deliberate mix of two or more origins, usually built to a stable flavour profile that the roaster can maintain year-round. Most espresso blends combine a Brazilian or Colombian base (body, sweetness, crema) with something brighter (a small percentage of Ethiopian, say) to lift the cup. The result is balanced, milk-friendly, and consistent.
Blends exist because espresso, especially espresso with milk, benefits from balance. Pulling a single-origin washed Kenyan as an espresso can produce a shot so acidic it tastes like tomato juice. The same beans cut with a Brazilian base become a flat white that tastes like chocolate-covered cherries.
How to choose
If you brew filter at home, buy a single origin. Rotate them — try a different country every bag for a month and your palate will sharpen faster than at any other time in your coffee life.
If you pull espresso at home, especially milk drinks, start with the roaster's house blend or a dedicated espresso blend. Once you have your dial-in steady, branch out into single-origin espressos. They are harder to dial, more dramatic in the cup, and very rewarding when they work.
If you make both at home, buy both. A single-origin filter bag and a small bag of espresso blend will see you through most weeks without overlap.
The honest answer
Single origin sounds more sophisticated and blend sounds more commercial, but neither is true. A well-built blend is a craft object — recipes change with the seasons as crops come in and out — and a badly chosen single origin can be a disappointment. Trust the roaster. If you find one whose work you like, ask what they recommend for the brewer you actually use. That single conversation will teach you more than any guide.