Four Brewers, One Shared Idea
Most pour over drippers let your pour decide how fast the water leaves. The NextLevel Pulsar, the Tricolate, the December and the Fellow Stagg X all take some of that decision back, either by restricting drainage, by forcing water through the bed instead of around it, or by letting you dial the opening yourself. That single design choice is why their official recipes look nothing like a standard V60 card.
This guide compares the four on the terms that actually matter — bypass, flow restriction, grind and contact time — and anchors every claim to a recipe you can pull up and brew tonight.
The Bypass Problem These Brewers Are Solving
In a cone dripper, some of the water you pour runs down the filter wall and reaches the carafe without ever passing through the coffee bed. That is bypass, and in moderation it is useful: it dilutes the brew and softens a harsh extraction. It also means the liquid in your cup is a blend of properly extracted coffee and plain hot water.
Brewers built to reduce bypass make a different trade. When nearly all the water has to travel through the grounds, you extract more from the same dose, so recipes compensate by pushing the ratio out and the grind around. You can watch this happen in the numbers below: the harder a brewer restricts flow, the more water each gram of coffee is asked to handle.
Rule of thumb for this whole category: less bypass, weaker-looking ratio, longer contact time. The cup still lands at normal strength because more of the water did real work.
The Recipes, Side by Side
Every recipe here is an official or published one, listed as it appears in the CUP-TIMER catalog.
| Recipe | Ratio | Dose → Water | Temp | Grind | Brew time |
|---|---|---|---|---|---|
| Fellow Stagg X Official | 1:15 | 20g → 300g | 96°C | Medium-fine | 3:00 |
| Fellow Pour-Over Basic | 1:15.9 | 22g → 350g | 96°C | Medium | 3:30 |
| December Pulse Pour | 1:15 | 20g → 300g | 93°C | Medium-coarse | 3:00 |
| December Single Cup | 1:17 | 15g → 255g | 96°C | Medium-coarse | 3:30 |
| NextLevel Pulsar Suggested | 1:17 | 20g → 340g | 100°C | Medium-coarse | 4:30 |
| Scott Rao Pulsar | 1:17 | 25g → 425g | 100°C | Medium-coarse | 4:00 |
| Prima Tricolate | 1:18 | 20g → 360g | 99°C | Medium-fine | 10:00 |
| Scott Rao Tricolate | 1:20 | 20g → 400g | 100°C | Fine | 10:00 |
Read the table top to bottom and the pattern is hard to miss. Ratios walk from 1:15 to 1:20. Water temperature climbs from 93°C to a full 100°C. Brew time stretches from three minutes to ten. These are not stylistic preferences; they are what each brewer's flow behaviour demands.
Fellow Stagg X: Flat Bed, Conventional Timing
The Stagg X is the most familiar of the four. It is a flat-bottom brewer, so the coffee sits at an even depth and water passes through it more uniformly than in a cone — but drainage is not heavily restricted, and the recipes reflect that.
The official Stagg X recipe runs 20g to 300g at a tight 1:15, 96°C, medium-fine, finishing in three minutes. Fellow's own basic pour-over recipe opens the ratio slightly to 1:15.9 (22g to 350g), grinds one step coarser at Ode setting #5, and takes three and a half minutes across three pours. Both sit in territory a Kalita Wave drinker would recognise immediately.
If you are coming from a V60: the Stagg X is the smallest jump. Keep your usual ratio, grind a touch finer than you would for a cone, and pour flat and level rather than in tight spirals — the flat bed rewards even coverage, not centre-focused pours.
NextLevel Pulsar: Boiling Water, Coarse Grind
The Pulsar is the outlier that confuses people the first time. Its suggested recipe asks for medium-coarse grind and 100°C water and four and a half minutes — a combination that would produce a thin, sour cup in most cone drippers.
It works because the brewer restricts flow rather than relying on the bed to do it. With drainage held back, a coarse grind still gets enough contact time, while full-boil water and a long steep make up the extraction that a fine grind would normally provide. The payoff is that fines matter far less, which is exactly why the Pulsar is popular with people brewing light roasts on modest grinders.
Scott Rao published a scaled-up version at the same 1:17 ratio and 100°C, but with a 25g dose into 425g of water and a slightly shorter four-minute target. Same philosophy, bigger batch. Both recipes and the rest of the catalog live on the Pulsar brewer hub.
Actionable tip: if you own a Pulsar and your cup tastes hollow, resist grinding finer first. Check your water is genuinely at a rolling boil and that you are hitting the full four-plus minutes. Temperature and time are the Pulsar's primary levers; grind is the third.
Tricolate: Ten Minutes, 1:20, and Nowhere to Hide
The Tricolate is the most extreme brewer in this group and the least forgiving. Both catalog recipes run ten minutes, and both use ratios far weaker than anything you would pour through a cone: Prima's version is 1:18 at 20g to 360g with a medium-fine grind at 99°C, while Scott Rao's is 1:20 at 20g to 400g, ground fine, at a full 100°C.
A fine grind and a ten-minute brew would choke a V60 into a bitter, over-extracted mess. Here it does not, because almost none of that water is bypassing the bed — the extra water in the 1:20 ratio is doing extraction work rather than diluting a concentrate at the end. The result, when it goes right, is a very clean and transparent cup that shows off delicate light roasts.
It also goes wrong loudly. Ten minutes is a long time to discover your grind was one step off, and there is no pour technique to rescue it midway. Treat the Tricolate as a weekend brewer, not a Monday morning one.
December: The Dripper That Changes Its Mind
The December is the only one of the four where you set the flow yourself. Its base rotates to open or close the drainage opening, so a single brewer can run as a fast percolation dripper, a slow restricted one, or a closed immersion steep that you release at the end.
The catalog recipes stay deliberately moderate. The December Pulse Pour is 20g to 300g at 1:15, notably cooler at 93°C, medium-coarse, three minutes. The single-cup version drops to a 15g dose into 255g at 1:17 and 96°C over three and a half minutes. Neither pushes the extremes the way the Tricolate does — which is the point. The December hub is where to start if you would rather own one adjustable brewer than three specialised ones.
Actionable tip: change one setting at a time. Brew your usual recipe with the valve fully open to establish a baseline, then close it one notch and rebrew the same coffee. If you adjust valve position and grind together you will never learn which one moved the cup.
Which One Should You Buy?
- Coming from a Kalita Wave or V60 and want one clean upgrade: Fellow Stagg X. Familiar ratios, three-minute brews, no relearning.
- Light roasts, an entry-level grinder, and frustration with sourness: Pulsar. Full-boil water and coarse grind do the heavy lifting.
- You chase clarity and enjoy the process: Tricolate. Accept ten-minute brews and precise grinding as the cost of entry.
- You do not want to choose: December. One brewer that covers fast percolation through full immersion.
The honest summary is that none of these will fix a bad grinder or stale coffee. What they will do is take the most volatile variable in pour over — how fast water leaves the bed — and make it something you set deliberately instead of something you hope for.
Brew One Tonight
- Fellow Stagg X Official — 20g / 300g, 1:15, 96°C, 3:00
- NextLevel Pulsar Suggested — 20g / 340g, 1:17, 100°C, 4:30
- Scott Rao Tricolate — 20g / 400g, 1:20, 100°C, 10:00
- December Pulse Pour — 20g / 300g, 1:15, 93°C, 3:00