How We Decide When a Coffee Is Past Its Peak (the Cup-and-the-Calendar Test)

If you've ever opened a bag of coffee, sniffed it, and wondered whether it was still good, you already know the question every roastery faces constantly: when is a coffee past its peak? The answer is more complicated than "look at the date on the bag."

We use two tests to decide when a coffee has passed its peak. The cup test (does it taste like what the coffee should taste like?) and the calendar test (how long has it been since roast?). The two tests often disagree. When they disagree, we have a real decision to make.

This is the inside view of how we evaluate a coffee's freshness, why we trust the cup more than the calendar, and what we do with the bags that don't pass either test.

Why "fresh" isn't a single number

A common assumption is that coffee is fresh for X days after roasting and stale after that. The reality is messier:

• Roasted coffee doesn't go "bad" on a specific day. It gradually loses aromatic compounds and picks up stale notes. The transition is continuous, not sudden.
• The starting quality matters. A higher-quality green coffee will hold up longer than a lower-quality one. A well-processed washed coffee will hold up longer than a poorly processed natural.
• Storage matters enormously. A bag of coffee stored in a freezer at -10°F holds up much longer than a bag stored in a hot car trunk.
• The brewing method matters. Espresso is more sensitive to age than drip. Filter coffee is in the middle. Cold brew is the most forgiving.

The "fresh for 7-14 days" rule of thumb is a useful starting point but not the final answer. The cup is the final answer.

The cup test

When we suspect a coffee might be past its peak, we cup it. The cup test is structured:

• Brew the coffee at a standard ratio (1:18, water at 200°F, 4 minutes).
• Compare to a fresh sample of the same coffee roasted within the last 7 days.
• Look for specific staleness markers.

The markers we look for:

• Cardboard or paper notes. Stale coffee often develops a flat, papery flavor. It's distinct from the original cup profile.
• Loss of aromatic intensity. The same coffee, freshly roasted, will have noticeably more aroma. Stale coffee smells muted.
• Muted acidity. The bright, distinctive acidity that defines a coffee (especially lighter roasts) tends to fade as the coffee ages.
• Increased bitterness. Stale coffee often tastes more bitter than the same coffee when fresh. The bitterness isn't the same as the bitterness of over-extraction.
• Loss of distinctiveness. A coffee that tasted like blueberries when fresh might taste generically "coffee-like" when stale.

If 2+ of these markers are present in a noticeable way, the coffee has passed its peak. The exact threshold is a judgment call, but the markers are clear when present.

The calendar test

The calendar test is simpler:

• Days 1-7 after roast. Peak. Most aromatic compounds are at maximum. The cup is bright, clear, and distinctive.
• Days 8-21 after roast. Good, but starting to decline. Most coffees are still enjoyable, but the most delicate aromatics have started to fade.
• Days 22-35 after roast. Noticeable decline. Most light-roast coffees are clearly past their peak. Medium and dark roasts are still drinkable.
• Days 36-60 after roast. Significant decline. The cup is flat, papery, or woody. Most light roasts are not enjoyable.
• Beyond 60 days. Almost always past peak, even for dark roasts. The cup is usually woody or cardboard-like.

These windows are general. They shift based on:

• Roast level. Lighter roasts decline faster than darker roasts. The aromatic compounds that define a light roast are more volatile.
• Processing method. Washed coffees hold up slightly longer than natural-process. The mucilage left on naturals oxidizes over time.
• Storage conditions. Cool, dark, sealed storage extends the window. Warm, light, open storage shortens it.

We use the calendar as a quick filter. If a coffee is 60+ days past roast, we don't even bother cupping — it's almost certainly past peak. If it's 7-21 days past roast, we trust the cup. If it's in between, we do both tests.

When the two tests disagree

This is where the real decisions happen:

• Cup says good, calendar says stale. This happens with darker roasts and well-stored coffee. We've had coffee at 35 days that still cups well. We trust the cup and ship it.
• Cup says stale, calendar says fresh. This happens with poorly-stored coffee. A bag that's been in a hot warehouse for 5 days can cup as stale as a 30-day-old well-stored bag. We trust the cup and pull the bag.
• Both say bad. The coffee is past its peak. We either discount it heavily, blend it into espresso, or use it for staff training.

The principle: the cup is the final test. The calendar is a useful filter. We never ship coffee that fails the cup test, regardless of the date.

How this affects what you receive

When you order from us, here's the practical impact:

• We ship coffee that's 2-7 days past roast. Roasted Wednesday, shipped Thursday, delivered to most US addresses in 2-5 days. Most customers receive coffee that's 4-12 days post-roast.
• We don't ship coffee that's more than 14 days past roast. Even if the cup test would pass, the calendar is too far gone.
• We pull any bag that fails the cup test, regardless of date. If our pre-shipment tasting reveals staleness, the bag is held back. The customer gets a fresh one or a refund.

This means you almost never receive coffee past its peak from us. The system isn't perfect (we've had one or two bags that were borderline at delivery), but the failure rate is low.

What we do with the bags that fail

Coffee that fails one or both tests has a few possible fates:

• Discounted sale. Bags that are 30-45 days past roast but still cup as drinkable go on sale at 25-30% off. The customer gets a clear "older coffee" disclosure.
• Espresso blend. Stale single-origin coffees get blended into our espresso blend. The blend's roast level and the addition of other components masks some of the staleness.
• Staff training. We cup stale coffee on purpose during training. It helps us recognize the staleness markers faster.
• Compost. Bags that are clearly past their peak and can't be sold or blended go to compost. We compost all the coffee grounds and the paper bags.

We don't throw out very much coffee. The combination of small batch sizes, frequent roasting, and a willingness to use older bags in espresso means most of what we roast ends up being useful.

Why we don't print a "best by" date

Some roasters print a "best by" date on their bags. We've considered it and decided against it, for two reasons:

• The date is misleading. A "best by 30 days post-roast" date suggests the coffee is bad after 30 days. In our experience, the cup matters more than the date. A 25-day-old well-stored bag can be better than a 10-day-old poorly-stored bag.
• The date is conservative. If we printed "best by 14 days," customers would assume 15-day-old coffee is bad. It's not. We'd rather customers use their own judgment and the cup as the guide.

The roast date is printed on the bag. The customer can do their own math. We trust the customer to use the date plus their own tasting judgment.

The honest answer

The honest answer is that "freshness" is more complicated than a single number. The cup and the calendar both matter. We use both tests because they catch different problems.

If you've ever opened a bag of our coffee and thought it tasted past its peak, that's a real failure on our part. The cup test should have caught it. We want to know about it. We refund or replace. The system isn't perfect, but the failure rate is low and the response when it does fail is honest.

The bag you're about to brew? Probably 4-10 days post-roast. Probably in the cup. Probably at peak. Brew slow, sip slow, and if it doesn't taste right, tell us.

What to do if your coffee is past peak

If you've had a bag for a while and it doesn't taste like what you remember:

• Check the storage. Was the bag in a cool, dark place? Was it sealed? If not, the coffee may have aged faster than expected.
• Adjust the brew. Older coffee often benefits from a slightly finer grind or a slightly higher dose. The cup usually improves.
• Use it for cold brew. Cold brew is the most forgiving method. Older coffee brewed cold often tastes better than older coffee brewed hot.
• Use it for baking. Coffee-flavored desserts don't require peak freshness. A 60-day-old bag will work fine for chocolate cake or coffee ice cream.
• Compost it. If the cup is truly past saving, the grounds are great for compost.

The cup is the final test. If it tastes good, brew it. If it doesn't, use it for something else.

Brew slow. Sip slow. — and if a bag ever tastes past its peak, drop us a line. We'd rather replace it than have you drink coffee that doesn't represent what we do.

P.S. If you want to read about how we approach roast dates, what our roast date sticker is doing on the bag back covers the reasoning. And if you're curious about how we taste-test new coffees, how we cup every coffee twice walks through our quality control process.