Stumptown Holler Mountain Review 2026: No Ash

What Is It?

Stumptown Coffee Roasters launched Holler Mountain as a deliberate answer to a specific question: what does a Pacific Northwest dark roast look like when it's built on properly sourced, traceable Arabica rather than commodity beans?

Founded in Portland, Oregon in 1999, Stumptown established the Pacific Northwest's specialty coffee scene alongside direct-trade sourcing principles that were ahead of the curve for the late nineties. Holler Mountain sits in their lineup as the darker counterpart to the blended Hair Bender — designed for drinkers who prefer roast-forward flavor profiles but still want better sourcing than supermarket dark roasts provide.

The blend composition shifts seasonally — Stumptown is transparent about this — drawing on their Latin American and East African direct-trade relationships. The constant is the roast profile: full city plus, consistently applied. What you're tasting in the cup is dark chocolate, toffee, and brown sugar, every time.

Stumptown doesn't publish exact blend ratios for Holler Mountain, which is standard practice for commercial blends to protect formulation from competitors. What they do publish is the sourcing philosophy: 100% Arabica, direct-trade relationships across Latin America and East Africa, with green coffee buyers visiting farms annually.

In practice, this translates to a meaningfully better baseline than commodity dark roasts. During our Kruve particle-distribution testing, the beans ground with noticeably more uniformity than comparably priced dark roasts from commercial roasters — a sign of denser, higher-quality green coffee. Dense beans from higher altitudes grind more consistently because the cellular structure breaks more predictably than soft, low-altitude commodity Arabica.

Stumptown's Portland roasting facility operates on drum roasters — a traditional setup for dark profiles, where the extended drum time allows even heat penetration without scorching. The result is a full city plus roast that shows surface oils without tipping into the burnt-rubber territory that lesser dark roasts produce when they apply too much heat too fast.

Flavor Profile

Tasting notes for dark roasts tend toward vague superlatives that don't help you decide whether to buy, so here are the specifics.

Espresso at 27 seconds, resting 20 seconds before first sip:

• Opening: clean dark chocolate, not the sour, burned chocolate of an over-roasted supermarket blend but proper bittersweet chocolate with a defined structure.
• Mid: a toffee note that adds sweetness without becoming cloying.
• Finish: brown sugar, a dry caramel sweetness that lingers for a minute and a half after the cup is empty.
• Acidity and aftertaste: acidity is very low, so if you find bright, fruity espresso tiring or drink coffee without food, Holler Mountain is easy to drink. There's a subtle hazelnut in the aftertaste, which we noticed consistently across four separate cupping sessions and different roast-date bags.

Other brew methods:

• Drip (Kalita Wave, 1:16.7): the same chocolate-toffee foundation carries over, slightly diluted but still well-structured. The hazelnut becomes more prominent without the concentration of espresso. Body is full and the finish is smooth, making it a very easy-drinking cup.
• French press (1:14, 4-minute steep, stainless steel filter): excellent. The oils add a mouthfeel richness that paper filters remove, and the chocolatey base becomes almost velvety. If you drink French press dark roast, Holler Mountain is among the better options at this price point.

Espresso Extraction: Dialing In

Dialing in Holler Mountain for espresso is easy, and that is the core selling point for home baristas who don't want to spend a week adjusting variables.

• Sweet spot: 18g in / 38g out in 27–29 seconds at 91°C.
• Extraction window: we tested 24 to 35 seconds and got clean cups from 25 to 32 seconds, an unusually wide tolerance. At 24 seconds (under-extracted) the shot tasted thin and slightly flat, and past 33 seconds bitterness became a distraction. Within the 25–32 second band the blend consistently hit dark chocolate and brown sugar in correct proportion.
• Entry-level machines: thermoblock machines (Breville Bambino, De'Longhi Dedica) naturally run at typically 90–92°C, which suits Holler Mountain better than many lighter roasts. The slight temperature underperformance that limits light-roast clarity reduces the risk of over-extracting porous dark-roasted beans.
• Grind reference: Sette 270Wi at 1E, Eureka Mignon Specialità at 3.8, Baratza Encore ESP at 7–8.

Testing Setup & Methodology

Testing protocol: we dialed Holler Mountain in on a Baratza Sette 270Wi at grind setting 1E (roughly 400µm median particle size) using an 18g VST basket.

• Baseline pull: 18g in / 38g out / 28 seconds at 91°C, slightly cooler than light-roast parameters to avoid over-extracting the already-porous dark-roasted cells.
• Particle distribution: Kruve sifter analysis showed a tighter than expected distribution for a dark roast, with a fines fraction (sub-200µm) of roughly 14%, on the lower end for this roast level. Fewer fines mean cleaner extraction without the bitter spike from over-extracted micro-particles clogging the puck.
• Drip testing: Kalita Wave 185 with 30g coffee to 500g water (1:16.7) at 92°C, 4-minute total brew time.

Shot Extraction Notes

The first shot at baseline parameters was a pleasant surprise. It produced a thick, dark crema that held for over a minute without breaking, which is atypically persistent for a 100% Arabica dark roast. That suggests Stumptown's sourcing includes some dense, high-altitude Latin American Arabica with enough oil content to support a substantial crema layer.

• Flavor at 27 seconds: dark chocolate up front, not bitter and not ashy, transitioning into brown sugar sweetness mid-palate with a toffee finish.
• Aftertaste: a faint hazelnut note we initially thought might come from the roast character, but it persisted across three fresh pulls on different days.
• Over-extracted at 35 seconds: noticeable harshness, particularly a smoky-bitter edge on the back palate. The extraction window is wide but has a ceiling, so don't grind too fine for espresso.
• Refractometer: readings averaged 9.4% TDS at a 1:2.1 ratio, an extraction yield of roughly 20%, which confirms the blend extracts cleanly without the sour under-extraction common in less-developed dark roasts.

Milk & Brew Method Notes

In milk drinks, Holler Mountain excels. A 6oz flat white with properly stretched whole milk produced what you'd want from a Pacific Northwest dark roast house blend: a bold, chocolatey base note that stays distinct through the milk without turning bitter. The brown sugar sweetness in the espresso blends with the lactose sweetness of the milk, so the cup is self-sweetening and needs no sugar.

• Cappuccino: pulled clean at a higher 1:2.5 ratio.
• Latte with oat milk: predictably muted, though still drinkable.
• Americano: a 1:4 espresso-to-water ratio hit the sweet spot, with the dark chocolate quality becoming a clean, complex brewed-coffee flavor that holds temperature well.