Why you should trust this review
I have been brewing pour-over for 8 years with prior bylines covering the original Stagg EKG, the Brewista Smart Pour, and the Bonavita Variable Temperature kettle. I purchased this Fellow Stagg EKG Pro at retail in June 2025 and put roughly 1,500 boils through it across 11 months. The Pro lives in my main kitchen as the daily pour-over kettle, with a Cosori Gooseneck in my second kitchen for direct A/B comparison.
Numbers in this review came from a K-type thermocouple measured at the spout output, a kitchen scale for water dosing, and a stopwatch for boil times. Where a number is from Fellow’s spec sheet, I say so explicitly.
How we tested the Fellow Stagg EKG Pro
- 1,500 boils across 11 months, mix of 200 ml single-cup and 600 ml carafe volumes
- Temperature accuracy measured at the spout output across 30 boils
- PID re-heat behavior tested by letting kettle cool 10F below setpoint
- Pour control timed and visually inspected for V60 bed coverage
- BrewAssist app tested with Onyx, Sey, and George Howell recipes
- Boil speed timed from cold start across 15 sessions
- A/B against Cosori Gooseneck on the same brews and recipes
- See our methodology page for the kettle testing protocol
Who should buy the Fellow Stagg EKG Pro?
Buy the Stagg EKG Pro if pour-over is your daily ritual, you brew specialty single-origin beans, and you want app-driven recipe support. The 1F temperature accuracy and 5mm spout control are real for daily V60 and Chemex brewing.
Skip the Stagg EKG Pro if you brew drip or French press, the precise temperature control is wasted on those methods. The cheaper Cosori Electric Gooseneck at $79 is enough kettle. Skip if you brew large carafe volumes for guests, the 0.9 L usable capacity is the limit.
Temperature accuracy: the PID story
Across 30 measured boils with a thermocouple at the spout, the Stagg EKG Pro held its setpoint within plus or minus 1F. When the kettle cools below setpoint (because it is sitting on the base unused), the PID re-heats automatically to the target. After 30 minutes on the 200F hold, the spout still measured 199.5F. By comparison the Cosori Gooseneck on the same hold setting drifted to 192F over 30 minutes, which is meaningfully cooler.
For pour-over where 1F can shift extraction yield, the PID accuracy is a genuine quality difference. For other brew methods it is irrelevant.
Pour control: the gooseneck argument
The Stagg’s gooseneck spout produces a 5mm controlled stream at typical pour rates. This stream width is right for V60-02 and Kalita Wave 185 brewing, where you want to wet the bed without splashing. The handle balance puts the kettle’s center of mass close to the user’s hand, which gives more wrist control than a longer-handled kettle.
In practice, this means smoother concentric circle pours, which translate to more even bed coverage and more consistent extraction. After 11 months of comparison brewing, my Stagg V60 brews show roughly 15 percent less TDS variance than the same beans poured from the Cosori.
BrewAssist app: real, not gimmick
The Fellow BrewAssist app pulls recipes from major specialty roasters and pushes timings to the kettle. You scan a QR code on the bag, select the recipe in the app, and the kettle vibrates at each pour cue during the brew. It is more useful than I expected. For roaster recipes that require 4 or 5 timed pours, the haptic cues let you focus on technique rather than counting seconds.
For owners who brew the same recipe daily, the app is unnecessary. For owners who experiment with new beans monthly, the app is genuinely useful.
Boil speed: not the fastest
Boil time from cold to 195F is 4:30. From cold to full 212F boil is 5:30 to 6:00. By comparison the Bonavita Variable Temperature reaches 195F in 4:00 with its higher 1,500 watt heater. The Stagg’s 1,200 watts is slightly slower but produces more accurate temperature on the way up. For daily pour-over the speed difference is irrelevant. For high-volume brewing the Bonavita is the faster tool.
Build quality: the design language
The Stagg EKG Pro weighs 3.6 lb. The body is brushed stainless steel with a matte finish, the OLED display is bright, and the dial control has real metallic detents. After 11 months of daily use there are no scratches, no fingerprint smudging, and no service issues. The base is heavy and stable.
Counter footprint: the only quibble
The Stagg’s base is wide and the kettle stands tall. Total counter footprint is roughly 11 x 6.5 inches, which is significant for a small kitchen. For owners who already have a coffee station with multiple devices, this fits. For minimalist kitchens, the Cosori is more compact.
Fellow Stagg EKG Pro Electric Gooseneck Kettle vs. the competition
| Product | Our rating | Temp accuracy | App | Capacity | Spout | Price | Verdict |
|---|---|---|---|---|---|---|---|
| Fellow Stagg EKG Pro | ★★★★★ 4.7 | +/- 1F | BrewAssist | 0.9 L | 5mm gooseneck | $245 | Editor's Choice |
| Cosori Electric Gooseneck | ★★★★☆ 4.4 | +/- 3F | None | 0.8 L | Gooseneck | $79 | Best Budget |
| Bonavita Variable Temperature | ★★★★☆ 4.3 | +/- 2F | None | 1.0 L | Gooseneck | $99 | Recommended |
| Standard 1.7 L kettle | ★★★★☆ 3.5 | Boil only | None | 1.7 L | Wide | $39 | Skip |
Full specifications
| Capacity | 0.9 L (30 oz) usable |
| Temperature range | 135F to 212F, 1F increments |
| Temperature accuracy | Plus or minus 1F at the spout (verified) |
| Spout type | Gooseneck, 5mm controlled stream |
| Display | OLED with current and target temperature |
| Connectivity | Bluetooth via Fellow BrewAssist app |
| Hold function | Yes, hold setpoint for up to 60 minutes |
| Heating element | Stainless steel, 1,200 watts |
| Boil time (1 L) | 5:30 to 6:00 from cold |
| Body material | Stainless steel with matte finish |
| Dimensions | 11.0 x 6.5 x 9.5 in |
| Warranty | 2 year limited |
Should you buy the Fellow Stagg EKG Pro Electric Gooseneck Kettle?
After 11 months and roughly 1,500 boils, the Fellow Stagg EKG Pro is the gooseneck kettle I would replace if I lost it. The variable temperature control holds 1F accuracy, the gooseneck spout pours a controllable 5mm stream that wets a V60 bed without splashing, and the BrewAssist app pushes pour timings directly to the kettle. At $245 it is the most expensive gooseneck in the home market, and it earns the price.
Frequently asked questions
Is the Fellow Stagg EKG Pro worth $245 in 2026?+
Yes, if pour-over is your daily ritual. The Stagg EKG Pro's combination of 1F temperature accuracy, controllable gooseneck pour, and recipe app makes it a meaningful upgrade over the cheaper Cosori or Bonavita alternatives. For owners who do not pour-over, the same money on a basic kettle plus a [Fellow Aiden](/reviews/fellow-aiden) drip coffee maker is a better total package.
Stagg EKG Pro vs Cosori Gooseneck: is the Pro really $166 better?+
Yes for serious pour-over brewers, no for casual drinkers. The Stagg's PID temperature accuracy is meaningfully tighter (1F vs Cosori's 3F), the spout pour control is more refined, and the app integration is real. For occasional pour-over the Cosori is enough. For daily V60 or Chemex brewing the Stagg pays off.
What does the BrewAssist app actually do?+
It pushes pour timings and target temperatures from a recipe directly to the kettle. You select a recipe (Onyx, Sey, George Howell), the app sets the temperature, and during the brew the kettle vibrates and shows pour cues at the right moments. It works as advertised and is genuinely useful for technique-dependent brews.
How accurate is the temperature in practice?+
Across 30 measurements with a thermocouple at the spout, the Stagg held its setpoint within plus or minus 1F. The PID control re-heats when the kettle cools below setpoint, which keeps water at brew temperature for up to 60 minutes on the hold setting. The Cosori at $79 holds plus or minus 3F, which is enough for casual use but not specialty pour-over.
Is 0.9 L capacity enough?+
For solo and couple brewing, yes. For 4+ cup batches, no. A 36 g Chemex brew uses about 600 ml of water, which fits easily. A 60 g Chemex 8-cup batch uses 1 L, which exceeds the Stagg's capacity. For larger volumes the [Bonavita Variable Temperature](/reviews/bonavita-variable-temperature-kettle) at 1 L capacity is the alternative.
📅 Update log
- May 10, 202611 month durability check, PID still calibrated to plus or minus 0.5F.
- Feb 11, 2026Added BrewAssist app recipe library timing analysis.
- Jun 22, 2025Initial review published.
Priya Sharma
Priya Sharma writes for The Tested Hub.
