What is Cooper's Cask Sumatra Dark Roast?
Cooper's Cask Sumatra Dark Roast is a dark, washed, organic, single-origin Sumatran coffee sold whole bean or ground in three bag sizes.
Cooper's Cask roasts this Sumatran coffee to a dark level and processes it using a washed method, an approach that tends to produce a cleaner cup than the wet-hulled processing common in the region. It carries an organic certification and is sold unflavoured.
Buyers can choose from 12 oz, 2 lb and 5 lb bags, in whole bean or ground, with grind options covering espresso, filter, French press and cold brew. A subscription is available, and the coffee is offered year-round rather than as a seasonal release.
Cooper's Cask Sumatra Dark Roast Taste: What It Actually Tastes Like
The Sumatra Dark Roast carries the roaster's own tasting notes of earthy, bold and full body, describing a heavy, low-brightness cup.
Cooper's Cask describes this coffee as earthy, bold and full-bodied. These are the roaster's own words for its own coffee. They point toward a cup with low acidity, significant weight on the palate and the kind of dark, mineral-edged character that Sumatran beans are broadly associated with at this roast level.
The washed processing is worth noting. Most Sumatran coffee sold in this roast tier uses wet-hulling, which adds a rustic, fermented edge. A washed process here may produce a somewhat cleaner expression of the earthy, bold profile the roaster describes, though the dark roast level will still dominate the final cup.
- Earthy: the roaster's primary descriptor, consistent with Sumatran origin character at a dark roast level.
- Bold: indicates a high-extraction, strong cup rather than a delicate or nuanced one, suitable for milk-based drinks.
- Full body: suggests significant mouthfeel and low acidity, which suits French press and espresso preparation.
- Washed process: less common for Sumatra at this price tier, and likely produces a cleaner base than wet-hulled alternatives.
How fresh is it when it arrives?
Freshness on arrival depends on how quickly Cooper's Cask turns stock, because the bag itself carries no roast date.
The bags come in three sizes, and choosing the right one affects practical freshness at home. A 5 lb bag at daily brewing rates lasts around three to four weeks, which is close to the point where degassed whole beans begin to lose flavour. Grinding to order and storing in an airtight container will extend that window.
A subscription route is available, and ordering on that basis rather than through a third-party retailer is the more reliable way to manage how long the coffee has sat before it reaches your grinder. Whole bean holds its character longer than pre-ground across all three sizes.
- Whole bean is available in all three sizes and will stay fresher longer than any pre-ground option.
- A subscription is offered, which reduces the chance of stock sitting in a warehouse for an extended period.
- The 12 oz bag is the sensible starting size for a new buyer who wants to assess the roast before committing to 2 lb or 5 lb.
Where the coffee comes from
This coffee comes from Sumatra and carries an organic certification, giving buyers a clear origin and one verified ethical commitment.
Cooper's Cask names Sumatra as the single origin and holds an organic certification for this coffee. That combination tells a buyer the beans come from one growing region and were produced without synthetic pesticides or fertilisers under the terms of the certification standard.
The roaster commits to a washed processing method, which is a specific and traceable production choice at origin. Beyond that, the farm or cooperative supplying the beans is not named in what the roaster publishes about this coffee, so traceability stops at the country level.
- Single origin from Sumatra: one country, one regional character, not a blend designed to hide provenance.
- Organic certified: one independent standard verified by a certifying body rather than a self-declared claim.
- Washed processing: a stated and specific method, less common for Sumatran coffee and relevant to cup character.
- Farm or cooperative identity: Cooper's Cask does not name the specific producer for this coffee.
Cooper's Cask Sumatra Dark Roast vs Cooper's Cask Ethiopia Decaf
The Sumatra Dark Roast and the Ethiopia Decaf share a roaster, a price per kilo at the 5 lb size and the same bag structure, but they target different drinkers entirely.
The Sumatra Dark is a caffeinated, dark-roasted, earthy and full-bodied cup processed by washed method. The Ethiopia Decaf is a medium-roasted, Swiss Water decaffeinated coffee with a published profile of chocolate orange, sweet lemon and black tea. They are aimed at opposite ends of the roast and caffeine spectrum.
Both carry organic certification and are available year-round in the same three bag sizes. Neither prints a roast date. At the 5 lb size both land at $35.25 per kilo. The choice is straightforward: buy the Sumatra for a heavy, bold daily driver, and the Ethiopia Decaf for a brighter, lighter cup or for evening drinking without caffeine.
- Sumatra Dark wins for buyers who want a heavy, low-acid espresso base or a bold French press cup with caffeine.
- Ethiopia Decaf wins for evening drinkers or anyone who finds dark, earthy profiles too flat, given its brighter tasting notes.
- Both share identical bag sizes and per-kilo pricing at the 5 lb level, so cost is not a tiebreaker between them.
- The Ethiopia Decaf uses Swiss Water process, a chemical-free decaf method; the Sumatra uses a washed caffeine-on process.
Cooper's Cask Sumatra Dark Roast price per kilo: how it compares
At $35.25 per kilo on the 5 lb bag, this Sumatran sits at a fair price for an organic single origin but not an exceptional one.
The 12 oz bag at $18.95 works out to $55.74 per kilo, which is expensive for a dark roast. The 2 lb option brings that down to $41.83 per kilo, and the 5 lb bag reaches $35.25 per kilo. The per-kilo cost at volume is where the value case is made, not at the entry size. Per-cup cost at a 15 g dose runs from $0.84 at 12 oz down to $0.53 at 5 lb.
For an organic, single-origin dark roast that is available year-round and ships in multiple grind options, $35.25 per kilo at the 5 lb size is defensible against the specialty market broadly. Buyers who cannot commit to 5 lb at a time will pay more per kilo than the price looks on first read. The 2 lb bag is a reasonable middle ground if daily consumption does not justify the largest size.
Who should buy it (and who should not)
This is a coffee for dedicated dark-roast drinkers who want a single-origin Sumatran with organic certification and flexible bag sizing.
The earthy, full-bodied, bold profile suits espresso preparation and French press most directly. It also works for anyone who uses a dark roast as a milk-drink base, where its weight holds up against steamed milk without disappearing.
It is a poor fit for buyers who prefer brightness, fruit-forward notes or medium-roast complexity. The dark roast level and Sumatran origin together push firmly in one direction, and the profile will not appeal across the board.
Buy it if
- You drink dark-roast espresso or French press daily and want a reliable, year-round single origin.
- Organic certification matters to you and you want it at a price that gets reasonable at volume.
- You are already familiar with Sumatran coffee character and want a washed version to compare.
Skip it if
- You prefer bright, acidic or fruit-forward coffees; this roast level will suppress those qualities entirely.
- You want transparency down to the farm level before buying a single-origin coffee.
- You buy small quantities infrequently, since the per-kilo cost at 12 oz is high for what the roast delivers.
Frequently Asked Questions
Is the Cooper's Cask Sumatra Dark Roast good for espresso?
Yes. The roaster lists espresso as one of its grind options, and the published profile of bold, full body and earthy character suits espresso preparation well. Dark-roasted Sumatran beans tend to produce a heavy, low-acid shot that holds up under milk. Buy it whole bean and grind to order for the best result.
Cooper's Cask Sumatra Dark Roast vs Cooper's Cask Ethiopia Decaf: which should I buy?
Buy the Sumatra Dark if you want a caffeinated, heavy, earthy cup from a single origin. Buy the Ethiopia Decaf if you want a brighter medium roast with chocolate, citrus and tea notes, or if you need a caffeine-free option. Both share the same bag sizes and per-kilo pricing at 5 lb. The profiles are opposite, so the choice is about what you enjoy drinking.
What grind size works best for French press with this coffee?
Cooper's Cask lists French press as a supported grind option. For French press, a coarse grind is standard, typically around 1 mm particle size or a setting in the coarser half of your grinder's range. A coarser grind reduces over-extraction during the four-minute steep and prevents excessive fines from passing through the mesh filter into the cup.
How much does it cost per cup?
At a 15 g dose per cup, the 12 oz bag works out to about $0.84 per cup, the 2 lb bag to about $0.63 and the 5 lb bag to about $0.53. Those figures depend on your dose. If you brew lighter or heavier than 15 g, your cost per cup will shift accordingly. The 5 lb size offers the lowest per-cup cost of the three options.
Does this Sumatra dark roast come in decaf?
It does not. Cooper's Cask does not offer a decaf version of this specific Sumatran coffee. The roaster does sell a separate decaffeinated coffee, the Ethiopia Decaf, which uses Swiss Water process and is available in the same bag sizes. If decaf is a requirement, that is the product to consider instead.
Can I subscribe to this coffee and save money?
Cooper's Cask offers a subscription for this coffee. Subscribing is also a practical way to reduce how long the coffee sits before it reaches you, since the bag carries no roast date and subscription fulfilment typically draws from more recent roasting runs than open retail stock. Check the roaster's site for the current subscription discount rate.
