Last updated: October 21, 2026
Your first shots will probably taste sour, bitter or thin, and that is normal. Espresso is a recipe: the same few things (how much coffee, how fine it is ground, how much comes out and how fast) decide how it tastes. This guide gives you a simple starting recipe, shows you step by step how to brew your first shot, and explains what to change when it does not taste right.
About this guide: it is based on guidance published by espresso machine makers, coffee educators and equipment retailers, listed at the bottom of the page. The steps work on most home machines, but always read your own machine's manual first.
What you need
- An espresso machine with a portafilter. Still choosing one? See our guide to espresso machines for beginners.
- A grinder that can grind fine, ideally a burr grinder. See our Grinders section.
- Fresh coffee beans. Choose beans roasted recently. More in our Coffee Beans section.
- A small kitchen scale that reads to 0.1 g, and a timer (your phone is fine).
- A tamper (usually included with the machine), a cup, and a dry cloth.
The starting recipe
| What | Starting point |
|---|---|
| Coffee in (dose) | About 18 g, matched to your basket |
| Espresso out (yield) | About 36 g, weighed in the cup |
| Ratio | 1 : 2 (coffee to espresso) |
| Time | 25 to 30 seconds, counted from when you start the pump |
This is a starting point, not a rule. Your first goal is to get close to it, taste the result, and then adjust.
Which basket do you have?
Your portafilter comes with filter baskets, and the type changes how forgiving the machine is.
- Pressurized (dual-wall) basket. It has an extra wall with a tiny outlet hole that builds back pressure. It is more forgiving of an uneven tamp or the wrong grind size, which is why it suits beginners and often comes with entry-level machines. Many can also be used with pre-ground coffee. The trade-off is less control over the extraction.
- Standard (non-pressurized, single-wall) basket. It has many small holes across the base. It needs a fine, fresh, even grind and a firm, level tamp, so a good burr grinder matters. It gives you full control, but takes more practice.
The steps below apply to both. With a pressurized basket you have a little more room for error.
How to pull your first shot
1. Warm up and flush
Switch on the machine early enough for it to heat up fully. Machines differ, so check the manual. Wipe the filter basket clean and dry, then flush a little water through the group head. This rinses away old coffee, and on many home machines it also helps bring the group up to temperature. If you like, warm your cup with hot water too.
2. Weigh your dose
Put the empty portafilter on the scale, set it to zero, and grind about 18 g of coffee into it. Check the size marked on your basket: stay within a gram or two of it. For example, a 17 g basket works with roughly 16 to 19 g, and a 21 g basket with roughly 19 to 21 g.
3. Level the coffee
Clumps and uneven coffee can make the water flow unevenly (this is called channeling) and ruin the shot. Break up clumps and spread the coffee evenly by tapping the portafilter gently or by using a distribution tool or a thin needle.
4. Tamp evenly
Rest the portafilter on a flat surface. Hold the tamper like a doorknob, keep your wrist straight, and press down evenly until the coffee stops giving way. The surface should end up flat and level. You do not need to use all your strength: La Marzocco suggests around 20 to 30 lb (about 9 to 14 kg) of pressure, and what matters most is that the tamp is level and the same every time.
5. Brew and weigh
Lock the portafilter into the machine straight away. Put your cup on the scale and set it to zero. Start the pump and the timer together. Watch the weight. When it reaches about 36 g, stop the shot. A few more drops may fall after you stop, so you can stop slightly early if your machine does not stop by itself.
6. Check the time
Look at your timer. Between 25 and 30 seconds is the target. Too fast or too slow tells you what to change (see the next step).
7. Taste, then change one thing
Taste the espresso (a short sip, since it is strong). Then make one change and brew again. Changing the grind size is usually the most effective adjustment.
| What you notice | What it usually means | What to try |
|---|---|---|
| The shot runs fast (for example 36 g in about 18 seconds), looks pale, tastes sour or thin | Under-extracted. The grind is too coarse | Grind finer |
| The shot runs slowly (for example 40 seconds to reach 36 g), tastes bitter or ashy | Over-extracted. The grind is too fine | Grind coarser |
| Time and weight are right but it tastes flat or dull | The beans may be old | Check the roast date. Beans several weeks past roast can taste flat |
| Water squirts out in uneven streams | Channeling, often from clumps or an uneven tamp | Level the coffee better and tamp evenly |
If your grinder has numbered steps or clicks, move one step at a time. Change only one variable per shot, so you know what caused the difference.
8. Clean up
Knock out the used coffee (the "puck"), rinse the portafilter and basket, wipe it dry, and empty the drip tray. If you steamed milk, wipe and purge the steam wand right away. When you change your grind size, run a little coffee through the grinder to clear out what was left from the previous setting.
Common beginner mistakes
- Changing many things at once. Change one thing per shot.
- Not weighing. Guessing the dose and the yield makes results impossible to repeat.
- Using old coffee, or pre-ground coffee in a standard basket. Standard baskets need a fresh, fine grind. Pre-ground coffee is better suited to a pressurized basket.
- Tamping unevenly. A tilted tamp can make the water flow unevenly through the coffee.
- Skipping the cleaning. Old coffee and oils left in the basket and group head can affect the taste of your next shot.
Frequently asked questions
How long should an espresso shot take?
A common starting point is 25 to 30 seconds, counted from when you start the pump. It is a guide, not a law: taste is the final test.
Why does my first shot taste bad?
Almost everyone's does. It takes several tries to match the grind size to your beans and your machine. Keep a note of each attempt (dose, weight out, time and how it tasted) and change one thing each time.
Do I need a scale?
It helps a lot. Weighing the coffee going in and the espresso coming out is the easiest way to get results you can repeat.
Can I use pre-ground coffee?
You can, mainly with a pressurized basket, which does not need a perfect grind size. For better control, grind fresh with a burr grinder and move to standard baskets when you are ready.
Next steps
Once you can make a consistent shot, you can start improving it: fresher beans, a better grinder, and learning to steam milk. If you do not have a machine yet, start with our espresso machine guide for beginners.
Sources: Clive Coffee, Espresso Extraction Time & Ratio; Clive Coffee, Why Is My Espresso Sour or Bitter?; La Marzocco Home, How to Make Espresso; EspressoParts, Barista Basics 101; Breville, Pressurized vs. non-pressurized baskets; Whole Latte Love, Standard vs. pressurized filter baskets.

