Espresso Workflow Guide: Step-by-Step From Grind to Shot
The complete espresso routine — dose, grind, distribute, tamp, extract — plus a troubleshooting table for when the shot doesn't behave.
Most people don't have an espresso problem. They have a repeatability problem. The shot that tasted brilliant on Sunday can't be reproduced on Tuesday, and because four or five things changed at once, there's no way to work out which one mattered.
A workflow fixes that. It's not about being precious — it's about making every variable except one stay still, so when something changes you know what caused it. This guide walks the full routine from bean to cup, gives you a starting recipe, and includes a troubleshooting table for reading what the shot is telling you.
What this guide covers
- A starting recipe
- The eight-step workflow
- The routine at a glance
- Choosing the right basket
- Troubleshooting your shot
- Diagnosing channelling
- Common mistakes
- Making it faster
- The tools, by stage
- Cleaning as part of the routine
Quick Answer
Weigh your beans → grind into a dosing cup → transfer to the basket → break up clumps with a WDT tool → level and tamp → flush the group → lock in and brew to a target weight → taste, then change one thing. The whole sequence takes about a minute once it's habit, and the discipline that makes it work is simple: fix your dose and your yield, and adjust only the grind until the time lands where you want it.
Start With a Recipe
A recipe is three numbers: how much coffee goes in, how much liquid comes out, and how long it takes. The relationship between the first two is your brew ratio — 18g in to 36g out is a 1:2 brew ratio. Fix the dose and the ratio, and grind size becomes your only lever.
- Dose in
- 18 g (match it to your basket — see below)
- Yield out
- 36 g of liquid espresso — a 1:2 ratio
- Shot time
- 25–32 seconds from first drip
- Water temperature
- Around 93°C for most medium roasts
- What you adjust
- Grind size only, until the time lands in range
These are a starting point, not a rule. Lighter roasts often want a higher brew ratio (1:2.5 or 1:3) and a longer time; darker roasts often want less. The number that matters isn't the recipe — it's that you have one and stick to it while you dial in.
The Espresso Workflow, Step by Step
01 Weigh the dose
Put your dosing cup or portafilter on the scale, tare to zero, and weigh out your beans. Not a scoop — a weight.
This is the step people skip, and it's the one that makes everything after it meaningful. Bean density varies enormously between roasts and origins, so a volume measure that gives you 18g of one coffee gives you 15g of another. If the dose moves, the shot moves, and you'll chase it with grind adjustments that were never the problem.
Use a scale that reads to 0.1g. A coffee scale with a built-in timer also saves you juggling a phone later.
02 Grind
Grind the weighed dose straight into a dosing cup — stainless, sits flush to a 58mm portafilter, holds around 50g of beans.
Two things to get right here:
- Grind fresh, immediately before brewing. Ground coffee loses aromatics within minutes because the grind exposes an enormous amount of surface area to air.
- If you changed the grind setting, purge first. On a hopper grinder, grind and discard a few grams so you're brewing the new setting rather than what was left in the chute. Single-dose grinders largely avoid this.
How fine is fine enough is the whole dialling-in question — the coffee grinder buying guide covers what adjustment type makes that manageable.
03 Transfer cleanly
Invert the dosing cup over the portafilter and lift straight up. A cup with a lip that sits flush stops the ring of grounds that otherwise ends up on the bench and — more importantly — missing from your dose.
If you grind directly into the portafilter instead, a dosing ring sits on top of the basket and catches what would otherwise spill over. Both approaches work; the point is that coffee which lands on the bench isn't in your shot, and your 18g dose quietly becomes 17.4g.
04 Break up the clumps
Grinders produce clumps — fine coffee is static-prone and sticks to itself, especially at espresso fineness. A clump is a dense lump inside an otherwise even bed, and water will not go through it. It goes around it.
A needle WDT tool fixes this in seconds. Stir thin needles through the grounds in the basket — down to the bottom, around the edges, a gentle circular motion for five to ten seconds. You're not trying to compact anything, just to break lumps apart and even out the density through the whole depth of the bed.
Why this step punches above its weight. Tamping only flattens the surface. A clump two-thirds of the way down survives a perfect tamp and channels anyway. WDT is the only step that addresses the inside of the bed, which is why it's the highest-impact tool most people are missing.
05 Level the bed
With the clumps broken up, you want the surface flat before the tamper touches it. Tap the portafilter gently on the bench, or use a distributor — a tool with angled fins that rotates across the top of the bed and settles it evenly.
Precision lists a three-fin Coffee Distributor 58mm, a Needle Distributor that combines needles with a stainless base, and a rosewood four-fin version.
A distributor is optional if you've done WDT properly and your bed is already level. It's genuinely useful if you grind straight into the basket and end up with a mound.
06 Tamp
Rest the tamper flat on the coffee, check it sits square to the basket rim, then press straight down in one smooth movement with your forearm in line with the tamper.
Level matters far more than hard. Once the bed is fully compressed, extra force does almost nothing except strain your wrist — but a tamp that's five degrees off leaves one side of the puck denser than the other, and water finds the loose side immediately.
Press down, hold briefly, lift straight up. Don't twist or "polish" at the end — it burnishes the surface and can crack the bed as you lift away. A tamper station makes keeping level much easier than tamping mid-air, and the coffee tamper guide covers whether a calibrated model is worth it for you.
07 Flush, lock in, and brew to weight
Run the group head for a second or two before locking in. This clears old grounds from the screen and stabilises the group temperature.
Then lock the portafilter in and start immediately — grounds sitting in a hot portafilter begin drying at the surface. Put your cup on the scale, tare to zero, and start the shot.
Stop the shot at your target weight, not your target time. Weight is the thing you're controlling; time is the thing you're measuring. If 36g arrives in 20 seconds, that's information — it doesn't mean you should keep pouring to 30 seconds.
08 Taste, then change one thing
Drink it. Then look at your three numbers and decide what to change — one thing, then pull again.
Almost always that one thing is grind size. Dose and ratio stay fixed until the time is in range and the shot tastes balanced; only then is it worth experimenting with them.
Write down what you did: bean, dose, grind setting, yield, time, and a word about how it tasted. Next bag, you start from a known point instead of from scratch.
The Complete Workflow at a Glance
| # | Step | What you're doing | Why it matters | Rough time |
|---|---|---|---|---|
| 1 | Weigh the dose | Beans onto the scale, tared, to a target weight | Fixes the first variable — without it nothing downstream is repeatable | 10 s |
| 2 | Grind | Grind fresh into a dosing cup; purge if you changed the setting | Freshness, and testing the setting you actually want | 10–20 s |
| 3 | Transfer | Invert the cup into the portafilter, lift straight up | Coffee on the bench is coffee missing from your dose | 5 s |
| 4 | WDT | Stir needles through the full depth of the bed | Breaks internal clumps — the only step that reaches inside the puck | 5–10 s |
| 5 | Level | Tap or distribute the surface flat | Gives the tamper an even surface to compress | 5 s |
| 6 | Tamp | Press straight down, square to the basket, then lift | Uniform density so water meets equal resistance everywhere | 5 s |
| 7 | Flush & brew | Flush the group, lock in, tare the cup, brew to target weight | Clean screen, stable temperature, measured yield | 30–40 s |
| 8 | Taste & adjust | Note the numbers, change one variable | Turns guesswork into a process that converges | — |
Around a minute, start to finish, once it's habit. The first week feels slow; by the second it's automatic.
Choose a Basket That Matches Your Dose
This one gets overlooked, and it quietly undermines everything else.
Filter baskets are designed around a dose range. Put 18g into a basket built for 20–24g and the puck sits low, leaving a large gap between the coffee and the shower screen — the shot can move around in that headspace before it settles. Put 20g into a basket built for 14–18g and the puck presses against the screen, which leaves marks on the surface and restricts flow unevenly.
Precision's laser-cut 58mm baskets come in three dose ranges, all at the same price:
| Basket | Dose range | Typical use | Price |
|---|---|---|---|
| Laser Cut Filter Basket 58mm | 7–9 g | Single shots | $33.00 |
| Laser Cut Filter Basket 58mm | 14–18 g | Standard doubles — the most common home range | $33.00 |
| Laser Cut Filter Basket 58mm | 20–24 g | Larger doubles and triples | $33.00 |
How to check your headspace: tamp a dose, lock the portafilter in, then unlock it and look at the puck. Clean surface with no screen marks means you have room. A ring or mesh imprint means the dose is too large for that basket — or the basket is too small for the dose you want to pull.
Troubleshooting Your Shot
Espresso gives you two kinds of feedback: how it ran, and how it tastes. Read them together.
| What you see or taste | Most likely cause | What to change first |
|---|---|---|
| Shot gushes — 36g in under 20 seconds | Grind too coarse | Grind finer, one small step. Re-pull before changing anything else |
| Shot chokes — barely drips, way past 40 seconds | Grind too fine, or dose too large for the basket | Grind coarser. If it's still choking, check your dose against the basket range |
| Sour, thin, sharp — and it ran fast | Under-extracted | Grind finer, or raise the ratio slightly |
| Bitter, dry, hollow — and it ran slow | Over-extracted | Grind coarser, or lower the ratio slightly |
| Sour AND bitter at once | Channelling — some of the bed over-extracted while the rest under-extracted | Not a grind problem. Fix puck prep: WDT properly, level the bed, tamp square |
| Time is right but it tastes flat | Stale beans, or water temperature too low | Check the roast date first; then temperature |
| Shot runs differently every time at the same setting | Inconsistent dose or inconsistent puck prep | Weigh every dose; standardise WDT and tamp |
| Puck is wet and soupy when you knock it out | Usually harmless — often just dose vs basket size | Ignore it unless the shot tastes wrong. A wet puck is a poor quality signal |
| Screen marks on the puck surface | Dose too large for the basket | Reduce the dose, or move to a larger basket |
The most useful row in that table is the sour-and-bitter one. If a shot tastes under-extracted and over-extracted simultaneously, no grind adjustment will fix it — you're tasting two different extractions from two parts of the same puck. That's channelling, and it's a preparation problem.
Diagnosing Channelling With a Naked Portafilter
A naked (or bottomless) portafilter has the spouts and base removed, so you watch the underside of the basket while the shot runs. It is the single best diagnostic tool in espresso, because it shows you the problem instead of making you infer it.
What good looks like: espresso beads across the whole base, converges into a single stream within a few seconds, and stays there.
What channelling looks like: one or more jets spraying sideways, or a stream that starts from one spot on the edge while the rest of the base stays dry. If you see that, the water found a low-resistance path and most of your coffee never got properly extracted.
What it usually tells you to fix, in order: clumps (do WDT more thoroughly), an uneven surface (level before tamping), a crooked tamp (work on keeping square), or a dose that doesn't suit the basket.
Precision lists a walnut naked portafilter and a double spout portafilter in the group handles and baskets range — worth checking current availability and pricing directly, as those listings have carried pre-order status.
Common Espresso Workflow Mistakes
- Changing two things at once. Grind and dose together means you learn nothing from the result. One variable per shot.
- Stopping the shot on time instead of weight. Time is your feedback signal, not your target. Brew to weight.
- Judging the shot by crema. Crema volume tracks roast level and bean freshness far more than extraction quality. Dark, fresh, gassy beans produce lots of crema from a terrible shot.
- Skipping WDT because you own a distributor. They do different jobs — a distributor levels the surface, WDT addresses the inside of the bed.
- Tamping harder to fix a fast shot. It doesn't work. Once the bed is compressed it's compressed; grind finer instead.
- Not purging after a grind change on a hopper grinder. You'll be tasting the previous setting and drawing the wrong conclusion.
- Leaving the portafilter locked in between shots. It cooks the grounds and bakes the puck onto the screen.
- Dialling in with a coffee you don't like. A perfectly extracted shot of a coffee that isn't to your taste is still a shot you won't enjoy.
How to Make the Workflow Faster
Speed comes from removing decisions, not from rushing steps.
- Set the station up once. Scale, tamper, WDT tool and dosing cup in the same place every time. Most lost seconds are spent looking for things.
- Single dose if you're changing coffees. Weighing beans takes ten seconds; emptying and refilling a hopper takes minutes.
- Use a tamper you don't have to think about. A calibrated or depth-adjusted tamper removes one judgement call from every shot.
- Keep a log. The fastest possible dial-in is the one you don't have to repeat because you wrote down the setting last time.
- Let the scale time the shot. A flow-activated timer starts itself, so you're not reaching for a button as the shot begins.
The Tools, By Stage
Not everything here is essential. The first three are; the rest earn their place depending on how you brew.
| Stage | Tool | Essential? | From |
|---|---|---|---|
| Grind | Burr grinder | Yes — sets the ceiling for everything else | $132.00 |
| Weigh | Coffee scale, 0.1g with a timer | Yes | $77.00 |
| Tamp | Tamper matched to your basket | Yes | $99.00 |
| Distribute | Needle WDT tool | Near-essential — highest impact per dollar | $55.00 |
| Transfer | Dosing cup 58mm | Very useful for single dosing | $27.50 |
| Transfer | Dosing ring 58mm | Useful if you grind into the basket | $27.50 |
| Level | Coffee distributor 58mm | Optional — helps if your bed mounds | $110.00 |
| Tamp | Tamper station | Optional — makes level tamping easier | $66.00 |
| Brew | Filter basket matched to your dose | Worth checking yours suits your dose | $33.00 |
| Clean | Brushes and a blind filter | Yes, over time | $11.00 |
Cleaning Is Part of the Workflow
A dirty machine changes the taste of a correctly-made shot, which means it quietly breaks everything you've just dialled in. Rancid coffee oils are bitter, and they build up faster than people expect.
After every shot: knock the puck out, wipe the basket, and run the group briefly to clear the screen.
Weekly: backflush the machine with a blind filter — a basket with no holes that forces water back through the group and flushes the three-way valve. Backflushing takes about a minute and is the highest-value maintenance job on any espresso machine. Brush the grinder chute and burrs with a soft grinder brush, and wipe the steam wand after every use with a steam wand brush or cloth.
Every few months: a deeper grinder clean with the burrs removed, and a proper group-head service with detergent if your machine supports it.
If your coffee suddenly tastes harsh and nothing in your recipe changed, clean the machine and the grinder before you touch the grind setting. It's the most common cause of a shot going wrong for no apparent reason.
Espresso Workflow FAQs
What is an espresso workflow?
An espresso workflow is the fixed sequence you follow from weighing beans to stopping the shot — dose, grind, transfer, distribute, tamp, brew, taste. The point isn't ceremony; it's that a fixed sequence keeps every variable constant except the one you're deliberately changing. Without that, you can't tell which change caused which result, so you never converge on a repeatable shot.
What is the correct espresso ratio?
1:2 is the usual starting point — 18g of coffee in, 36g of liquid espresso out, in roughly 25 to 32 seconds. From there, lighter roasts often suit a higher ratio (1:2.5 or 1:3) because they're denser and harder to extract, while darker roasts often suit less. Treat 1:2 as where you begin, not where you must stay.
Do I need a WDT tool for espresso?
It's the highest-impact tool most home setups are missing. Grinders produce clumps, and a clump is a dense lump water won't pass through — so it goes around, which is channelling. Tamping only flattens the surface and can't reach a clump inside the bed. Five to ten seconds of stirring with thin needles addresses the whole depth of the puck.
Should I stop my espresso shot by time or weight?
By weight. Weight is what you're controlling; time is what you're measuring. If your target yield is 36g, stop at 36g and note how long it took — that time tells you whether to grind finer or coarser next shot. Stopping by time instead means your yield drifts, so your ratio changes every shot and you've lost the reference point.
Why does my espresso taste sour and bitter at the same time?
That's channelling. Water found a low-resistance path through part of the puck and over-extracted it, producing bitterness, while the rest of the bed barely extracted at all, producing sourness — and both ended up in the cup. No grind adjustment fixes it, because it's a puck preparation problem. Work on WDT, levelling the bed, and keeping the tamp square.
How long should an espresso shot take?
Roughly 25 to 32 seconds from first drip to your target yield is a sensible working range. Faster usually means the grind is too coarse and the shot will taste sour and thin; slower usually means it's too fine and it will taste bitter and dry. Treat time as feedback on your grind rather than as a target to hit by stopping early or late.
Do I need a distributor if I use a WDT tool?
Usually not — they overlap but do different jobs. WDT breaks up clumps through the full depth of the bed; a distributor levels and settles the surface. If your WDT technique already leaves a flat, even bed, a distributor adds little. It's most useful if you grind straight into the basket and end up with a mound that needs levelling before tamping.
How much coffee should I use for a double shot?
Match the dose to your basket rather than to a universal number. Most home double baskets are built for 14–18g, so 18g is a common target. A basket rated 20–24g wants a correspondingly larger dose. Using a dose well outside the basket's range causes problems on its own — too little leaves excess headspace, too much presses the puck against the shower screen.
Why is my puck wet after the shot?
Usually it's harmless. A wet or soupy puck normally reflects the relationship between your dose and the basket size, plus whether your machine's three-way valve releases pressure. It is a poor indicator of shot quality — plenty of excellent shots leave a wet puck. Judge the shot by how it ran and how it tastes, not by how the puck looks afterwards.
How do I make my espresso more consistent?
Weigh every dose, brew to a target weight rather than a time, and standardise your puck prep so WDT and tamping are the same every shot. Then change only one variable at a time and write down what you did. Consistency comes from removing variation, not from any single piece of equipment — though a scale that reads to 0.1g is the cheapest place to start.
Where to Go Next
Each stage of this workflow has a guide of its own:
- Coffee grinder buying guide — burr types, burr size, adjustment and dosing styles
- Coffee scale guide — readability, capacity and timers
- WDT tool guide — technique in detail
- Coffee tamper guide — sizing, bases and calibrated tampers
- Coffee dosing guide — dose accuracy and transfer
Precision Coffee Tools is Australian owned and supported, with Australia-wide shipping and a 12-month warranty on coffee machines and grinders. The rest of the coffee guides and advice library covers filter brewing as well.