Brewing basics, 5 minute read, October 2026

How to buy coffee beans

Look for the roast date, buy what you'll use in a few weeks, and keep it airtight. Here's how to read a bag.

The bag you pick matters as much as how you brew it. A good method can't rescue stale beans, and a fresh bag makes almost any method taste better. Here's how to read a bag, what the labels mean, and how to keep the coffee fresh once you get it home.

Look for the roast date

The roast date tells you when the coffee was made. A best-by date doesn't, and it can be six months to a year out, long after the flavor has faded. Look for a roast date printed on the bag. If a bag has none, that's worth noticing.

Sources disagree on exact windows, but the general picture holds:

• Wait a few days. Freshly roasted coffee gives off a lot of gas. Many guides suggest waiting about 3 to 7 days after roasting before you brew, and longer for espresso.
• Drink within a few weeks. Most sources put the best flavor within about 2 to 4 weeks of the roast date. After about a month it fades faster.
• Buy what you'll use. For one or two coffee drinkers, a 12 oz (340 g) bag is often about right.

Whole bean or pre-ground

Whole beans stay fresh far longer. Once coffee is ground, it has much more surface exposed to air and goes stale quickly. Sources vary on how fast, from minutes to a couple of weeks, but all agree whole beans last longer. If you can, buy whole beans and grind them just before you brew. If you can't grind at home, ask the shop to grind a small amount for your method and use it up quickly.

Roast level

Roast level describes how long and how dark the beans were roasted. Names vary between roasters, so treat these as rough guides.

Terms like "French" and "Italian" roast aren't standardized, so a bag called Italian from one roaster may be darker or lighter than another's. Coffee Review uses a measured scale called Agtron, where a higher number means lighter, if you want a number.

Single origin or blend

A single origin comes from one country, region, or farm, so it shows what that place is like. A blend combines coffees from several places, usually to get a steady, balanced flavor from bag to bag. Neither is better. A blend is a good way to start with a new roaster, and a single origin is a good way to learn what you like.

Reading the label

Specialty coffee bags often list:

• Origin: the country and often the region or farm
• Process: how the fruit was removed from the bean. Washed coffees tend to be cleaner and brighter, and natural coffees tend to be fuller and fruitier.
• Elevation: in meters above sea level. Higher is generally linked to denser, more complex beans.
• Variety: the type of coffee plant
• Tasting notes: the roaster's description of what to expect. These are the roaster's words, not a guarantee.
• Roast date and roast level

What the certifications mean

• Organic: grown without most synthetic pesticides and fertilizers, under USDA standards in the United States. It covers farming practices only.
• Fairtrade: producers get a guaranteed minimum price. It doesn't require organic farming.
• Rainforest Alliance: covers environmental and worker standards. It doesn't require organic.
• Bird-Friendly: a Smithsonian program, with the strictest shade-grown requirements. It requires organic.
• Direct Trade: not a certification. It's a roaster's own claim that it buys directly from farms, so it's worth checking what the roaster actually says.

A bag with no certification isn't necessarily worse. Many small farms can't afford the fees, and many roasters publish their own sourcing details.

Storing your beans

• Use an airtight, opaque container, away from light, heat, and moisture.
• Keep it at room temperature. Clive Coffee advises against the fridge, because of moisture and odors.
• If you buy more than you can use, freeze a portion in sealed, single-use bags, and thaw one sealed. Don't refreeze it. Opinions on freezing vary, so this is optional.

This guide gives general buying advice, not a rule for every coffee. Freshness windows, storage advice, and certification details vary by source, and no controlled study of how fast ground coffee goes stale was found. Based on published guides, including Trade, Coffee Review, Seattle Coffee Gear, Home Grounds, and Clive Coffee.