Quick answer
Choose coffee beans in this order: the roast level you like, a single origin or a blend to suit how you brew, whole beans with a recent roast date, and only as much as you will drink in a week or two. Then store them sealed, cool and dark, and grind just before you brew.
| What | Guideline | Source |
|---|---|---|
| How much to buy | Enough for one or two weeks | National Coffee Association |
| Roasted whole beans, room temperature | 1 to 3 weeks | National Coffee Association |
| Ground coffee, room temperature | 1 to 2 weeks | National Coffee Association |
| Roasted whole beans, frozen in a truly airtight container | 3 to 4 months | National Coffee Association |
| When to grind | Right before brewing | National Coffee Association |
| How much per cup of filter coffee | About 13 g for 240 ml at 55 g per liter; 14 to 16 g across the 55 to 63 g per liter range | Wikipedia, Brewed coffee |
Step by step
1. Start with the roast level
Roast level changes the cup more than anything else on the label. A light roast keeps the coffee's own fruit and acidity, a medium roast leans to caramel and chocolate, and a dark roast tastes of the roast itself: bittersweet and smoky. If you drink your coffee with milk and like it bold, start dark. If you drink it black and want to taste the difference between farms, start light. If you are not sure, start medium.
2. Pick single origin or blend by how you brew
A single origin comes from one place and changes with the harvest; a blend is built to taste the same every time. For pour over and other paper-filtered methods, single origins show off best. For espresso, milk drinks and a daily pot, a blend is the safer pick. Some bags name the brewer the roaster had in mind: Broadsheet in Cambridge, for example, pitches its Headliner blend for pour over, drip or espresso.
3. Read the bag
A good bag tells you:
- The roast date. A best-by date alone tells you little about when the coffee was roasted.
- The origin: country and region, and on better coffees the farm or cooperative.
- The process: washed, natural or honey. Naturals taste fruitier, washed coffees cleaner.
- The variety, such as Bourbon or Gesha, on most specialty bags.
- Tasting notes, which describe what the coffee resembles, not added flavor.
- For decaf, the method, if the roaster knows it: Swiss Water, Mountain Water, sugarcane ethyl acetate or methylene chloride.
4. Buy whole beans
Ground coffee goes stale faster. The National Coffee Association gives roasted whole beans 1 to 3 weeks at room temperature and ground coffee 1 to 2 weeks, and advises grinding right before you brew. Wikipedia's article on roasting is blunter: it puts the best shelf life of roasted coffee at two weeks and ground coffee at about 15 minutes. If you do not own a grinder, ask the roaster to grind for your brewer and buy smaller amounts.
5. Let very fresh beans rest
Roasted coffee gives off carbon dioxide for days. Beans straight off the roaster bubble hard and brew unevenly, espresso most of all. Gracenote in Boston suggests resting its beans 6 to 12 days after roasting, depending on the origin and whether it is roasted for drip or espresso, as its site stated on September 27, 2026. The glossary entry on degassing explains the one-way valve on the bag.
6. Buy only what you will drink soon
The National Coffee Association suggests buying smaller batches more frequently, enough for one or two weeks. Keep the beans in an airtight container in a cool, dark cupboard, away from the oven and the dishwasher. If you must keep coffee longer, freeze it in a container that is truly airtight: the NCA gives frozen whole beans 3 to 4 months.
A starting point for each brewer
| You brew with | Start with | Why |
|---|---|---|
| Pour over or Chemex | Light or medium single origin | Paper filters give a clean cup that shows origin |
| Drip machine | Medium blend or single origin | Forgiving, and good for a full pot |
| French press | Medium or dark | The metal mesh keeps oils and body in the cup |
| Espresso machine | An espresso blend | Built to taste right as a concentrated shot and in milk |
| Moka pot | Medium-dark or dark | A strong stovetop brew that suits a rounder roast |
| Cold brew | Medium or dark, ground coarse | The long cold steep gives a smooth, low-bitterness cup either way |
These are places to start, not rules. A light Ethiopian in a French press or a single origin espresso is worth trying once you know what you like.
Troubleshooting
| The cup tastes | Likely bean problem | What to change |
|---|---|---|
| Flat, papery, no aroma | Stale beans, or pre-ground coffee kept too long | Buy whole beans with a recent roast date and a smaller bag |
| Too sour or sharp | A light roast that does not suit you, or grind too coarse | Try a medium roast, or grind a little finer |
| Too bitter or smoky | A dark roast, or grind too fine | Try a medium roast, or grind a little coarser |
| Uneven, gassy bloom and harsh shots | Beans too fresh for espresso | Let them rest a few more days |
| Fine one week, dull the next | Storage: air, light or heat | An airtight container in a cool, dark place |
Why the roaster matters too
The simplest way to get a recent roast date is to buy from a roaster near you. Massachusetts roasters we list roast to order or daily: Atomic in Peabody roasts every batch to order and packs it by hand, Mike Shea's in Bridgewater roasts daily and packs the beans straight into one-way valve bags, and Armeno in Northborough roasts daily to fill orders, as their own pages stated on September 27, 2026. Buying from them keeps a small business going and the money in a Massachusetts town. Why local roasters matter.
If you would rather let someone else choose, Bay State Coffee Club sends a bag from a different Massachusetts roaster in every box: you set the roast level, the style and whole bean or ground, and your ratings steer the next bag.
Sources
- National Coffee Association, coffee storage and shelf life: how much to buy, shelf life of beans and ground coffee, freezing, when to grind.
- Wikipedia, Coffee roasting: shelf life of roasted and ground coffee, degassing, roast levels.
- Wikipedia, Brewed coffee: the American standard.
- Roaster facts: our roaster profiles, written from each roaster's public pages and checked September 27, 2026.
By Joe McRose, Bay State Coffee Club. Updated .