Fellow Stagg EKG Pro Review (2026): The Smart Gooseneck

Why you should trust this review

I bought this Fellow Stagg EKG Pro at retail in June 2025 with my own money. No brand provided it and no one had any say in this review. It has been my daily pour-over kettle for 11 months, racking up around 1,500 boils, so this is genuine long-term ownership rather than a week with a loaner.

I keep a Cosori Gooseneck in a second kitchen, which gave me a real-world comparison point on the same beans and recipes. Where I report numbers, I measured them with a K-type thermocouple at the spout, a kitchen scale, and a stopwatch, not by trusting the display.

How we evaluated

My focus was the things that actually matter for pour-over, which are temperature accuracy, pour control, and how the kettle holds up over time. I measured setpoint accuracy by reading the water at the spout, where it actually contacts the coffee, rather than deep in the kettle where it always reads more favorably.

I tested the PID’s hold behavior by leaving the kettle on a temperature hold and checking how far it drifted over 30 minutes. I timed boil speeds from cold, ran the BrewAssist app through real recipes, and tracked TDS variance against the Cosori across 11 months of brewing the same beans.

Temperature accuracy and PID

This kettle offers variable temperature from 135F to 212F in single-degree increments, and unlike a lot of kettles that advertise precision, it actually holds it. Across 30 measured boils, the spout temperature stayed within plus or minus one degree of the setpoint. Measuring at the spout matters because that is where the water meets the grounds, and a lot of kettles lose accuracy on the way out.

The PID also re-heats when the water cools below the setpoint, which is what makes the hold function trustworthy. After 30 minutes on the 200F hold, the spout still measured 199.5F. On the same hold, the Cosori drifted down to 192F, which is enough of a gap to noticeably change extraction if you step away mid-brew.

For anyone chasing repeatable pour-over, this accuracy is the whole point. When the temperature is genuinely the number you set, the variable in your cup is your technique and your beans, not the kettle quietly lying to you.

Pour control

The gooseneck spout pours a controllable 5mm stream that is right in the sweet spot for a V60 to 02 or a Kalita Wave 185. Thin enough to be precise, steady enough not to fight you. The handle is balanced so the center of mass sits near your hand, which gives you real wrist control during slow concentric pours.

That control is not just a nice feeling, it shows up in the cup. Over 11 months of brewing the same beans, my pours with the Stagg ran about 15 percent less TDS variance than the Cosori. Smoother, more concentric pours extract more evenly, and the kettle that makes those pours easier produces more consistent coffee.

This is the kind of improvement that compounds. Once your pour stops being a source of variance, you can actually tell whether a recipe change or a grind change made a difference, because the kettle is no longer adding noise to every brew.

The BrewAssist app

The BrewAssist app connects over Bluetooth, on both iOS and Android, and it is worth being clear that it is Bluetooth rather than standalone Wi-Fi, so it talks to your phone, not the internet directly. Within the app you can scan a coffee bag’s QR code, pick a recipe from roasters like Onyx, Sey, or George Howell, and the app sets the kettle’s temperature for you.

The genuinely clever part is that during the pour, the kettle vibrates with haptic cues at each step of the recipe. Instead of watching a timer and a scale and the kettle all at once, you feel a buzz telling you when to pour and when to pause. For following a structured recipe it makes the process calmer and more hands-off than I expected.

It is not essential, and you can ignore it entirely and just dial in a temperature with the dial. But as an optional layer it adds real value for anyone who wants to brew a roaster’s recommended recipe without juggling instructions on a screen.

Boil speed and build, and the counter footprint

The honest tradeoff for all that accuracy is speed. Cold to 195F takes about 4:30, and cold to a full 212F runs roughly 5:30 to 6:00. A Bonavita Variable hits 195F in about 4:00, but it does that with a 1,500W heater. The Stagg runs 1,200W, so it is slightly slower on the way up while being more accurate when it arrives. For pour-over, where I would rather wait 30 extra seconds than miss my temperature, that is a trade I happily take.

The build is excellent. At 3.6 pounds with a brushed stainless matte body, a bright OLED showing both current and target temperature, and a satisfying metallic-detent dial, it feels like a precision instrument. After 11 months there are no scratches, no smudging, and it has needed no service. It looks and works like the day I unboxed it.

The real limitations are size. Usable capacity is 0.9 L, which is small for serving multiple drinkers. A 60g Chemex 8-cup brew uses about 1 L, which exceeds the kettle in a single fill, so big batches mean refilling. The footprint is also bulky, roughly 11 by 6.5 inches with a chunky base, so it claims a fair bit of counter real estate. The hold function runs up to 60 minutes, which is generous and useful for a slow morning.

Who should buy the Fellow Stagg EKG Pro?

Buy it if:

• You brew single-serve pour-over and want temperature accuracy you can actually trust at the spout.
• You value pour control and a balanced handle for smooth, consistent extraction.
• You would use the BrewAssist app to follow roaster recipes with haptic cues.
• You appreciate a precision-instrument build that holds up over years.

Skip it if:

• You routinely brew for several people, since the 0.9 L capacity is limiting.
• You want the fastest possible boil above all else.
• Counter space is tight, because the base is bulky.

The verdict

The Fellow Stagg EKG Pro is the kettle I reach for every morning, and after 1,500 boils it has earned that spot. Its PID accuracy is the real thing, holding within a degree at the spout and barely drifting on a long hold, and the gooseneck genuinely tightened up my pours and my consistency. The app is a thoughtful bonus rather than a gimmick.

It asks you to accept a slightly slower boil and a small, bulky package, and if you brew for a household those are real costs. But for the single-serve pour-over drinker who cares about precision, this is as good as the daily ritual gets, and it still looks brand new after nearly a year.