Pick up any bag of specialty coffee and you will see a roast description: light, medium, dark, medium-dark, filter roast, espresso roast - you get the idea. The terminology is often inconsistent between roasters, which makes it harder to know what you are buying. This guide explains what roast level actually means, how it affects the coffee in your cup and which level suits your brew method and taste. For the complete guide to choosing coffee, read How to Choose Coffee Beans: The Complete Buying Guide.
What is the difference between light, medium and dark roast coffee?
Roast level describes how long and at what temperature coffee beans are roasted.
Light roast beans are removed from the roaster at around 196 to 205 degrees Celsius - before or just at the first crack. They are lighter in colour, denser and more acidic. The original character of the bean - fruit notes, floral notes, the flavour of the growing region - is largely preserved.
Medium roast beans reach around 210 to 220 degrees Celsius, through the first crack and slightly beyond. The flavour profile becomes more balanced: acidity softens, sweetness develops and origin character is still present but less dominant.
Dark roast beans are taken to 225 degrees Celsius or higher, into the second crack. They are darker in colour, less dense and characterised by roasted, bitter and chocolatey notes. As roast level increases, origin character decreases: the flavour you taste in a dark roast is primarily the roast itself.
Does roast level affect caffeine content?
Yes - though the difference is smaller than most people expect. Light roast coffee contains marginally more caffeine than dark roast. The roasting process breaks down some caffeine, so the longer and hotter a bean is roasted, the slightly lower its caffeine content becomes.
The more significant practical effect comes from density. Light roast beans are denser than dark roast beans. If you measure by weight - which is the correct approach - light roast gives you slightly more caffeine per gram. If you measure by volume, using a scoop rather than scales, dark roast beans pack fewer beans per scoop and may actually produce a weaker cup. Weighing your coffee is always the more consistent method regardless of roast level.
Which roast level is best for filter coffee and pour over?
Light-to-medium roast works best for filter and pour over. These methods produce a clean, clear cup that highlights the coffee's original character - and light roast has the most origin-specific flavour to show.
"We try to focus not only on different regions, but from a traditional lens - a historical lens. The origin method, the origin of making. We try to make the coffee simple as it is. Too much syrups, too much flavours - the source of coffee is to be what it is."
- Ameen, Founder, Hamdan Coffee
A medium roast produces a more balanced result: still characterful but with softer acidity and developing sweetness. Very dark roasts are not suited to pour over because the paper filter removes the oils that give dark roasted beans their body, leaving a thin, bitter result. For Yemeni single-origin coffee in particular, a medium roast on a V60 or Chemex is the best introduction to what the origin tastes like.
Which roast level works best for espresso?
Medium-to-dark roast is the most reliable starting point for espresso. The high-pressure, short-contact extraction of espresso amplifies acidity, which can make light roast coffees taste sharp or sour unless the extraction is dialled in with precision. Medium-to-dark roasts have lower acidity, heavier body and chocolatey or caramel notes that translate cleanly under pressure and work well with milk.
Very dark roasts produce an intensely bitter espresso with little origin character remaining. For home espresso drinkers without highly calibrated equipment, a medium-dark roast is the most forgiving choice - it has a wider extraction window, meaning small timing or grind errors are less likely to ruin the shot.
How do I know which roast level I prefer?
The simplest test is two questions. Do you drink your coffee black or with milk? Black coffee drinkers who enjoy complex, fruity or floral flavours tend to prefer lighter roasts. Drinkers who prefer something rich, smooth and chocolatey tend to gravitate toward medium. If you drink coffee with milk, a medium-to-dark roast holds up better against the dairy.
How do you brew? Pour over highlights the brightness of light roasts. Cafetière and espresso suit medium to dark better.
If you are genuinely unsure, start with medium roast - it is the most forgiving across all brew methods and the most accessible starting point for developing a preference.
What roast level does Hamdan Coffee use for its Yemeni coffees?
Hamdan Coffee's Yemeni single origins - including Royal Haraaz and Yemen Mocha - are roasted at a medium level that preserves their natural character while developing the sweetness and body that make Yemeni coffee distinctive.
Yemeni beans are naturally processed, which means they already carry intense dried fruit, dark chocolate and wine-like complexity from the drying process. Roasting too light risks the coffee tasting underdeveloped; roasting too dark masks the origin character that makes Yemeni coffee worth seeking out. Medium roast sits in the window where both qualities are present simultaneously.
