How to Make Espresso

Let me skip the part where I tell you espresso is an elixir and a state of mind and the nectar of the gods. You came here to make a decent shot at home, not to read poetry. So here is the plain version: espresso is coffee made by forcing hot water through a compacted puck of finely ground coffee under high pressure, fast. That pressure is the whole trick, and it is why your french press and your drip machine can never make real espresso no matter what the box says. I have pulled thousands of shots and ruined plenty of mornings learning this, so let me save you some of that.

What is actually happening in the cup

Espresso is water heated to around 200°F (93°C), roughly 15 degrees below boiling, forced through tightly packed grounds at about 9 atmospheres of pressure. Note the word water. Real espresso is pumped hot water, not steam. The cheap “steam-driven” gadgets that hiss boiling steam through coffee are not making espresso, they are making strong, bitter coffee, and that distinction trips a lot of people up.

The flavor lives in the oils and the dissolved solids that the hot water strips out of the grounds on its way through. Get the variables right and those oils emulsify into the thick, hazelnut-colored foam on top called crema. Too hot and you scorch it. Too cool and it comes out thin and sour. Too slow through the puck and you pull out harsh, bitter tannins. Too fast and the water races through without grabbing much of anything. The entire game is controlling those few variables, which is what the rest of this is about. For the deeper theory, our companion guide to pulling the perfect espresso shot breaks down the seven variables one by one.

First, throw away the teaspoon

The single biggest upgrade you can make is to stop measuring coffee by volume and start weighing it. A cheap digital scale that reads to 0.1 gram will do more for your espresso than almost any other purchase. Here are the numbers worth memorizing:

Dose: about 9 grams of coffee for a single shot, 18 to 20 grams for a double. Most people, including me, almost always pull doubles, because doubles are easier to get right. Brew ratio: aim for roughly 1:2, meaning the weight of liquid espresso in the cup should be about double the weight of the dry grounds. So 18 grams in gives you about 36 grams out, which lands around 1.2 to 2 oz (36 to 60 ml) of liquid for a double. That ratio answers the most common question I get, which is “how much water,” and the honest answer is you do not measure the water going in, you measure the espresso coming out and stop the shot there.

Your grind needs to be fine, finer than table salt, closer to powdered sugar, but the exact setting depends on your beans and your machine. Grind is your main adjustment knob, so a decent burr grinder matters as much as the machine itself. We rounded up options in the best espresso grinders guide.

A word on the beans

Here is the failure nobody warns you about: stale coffee. Pre-ground supermarket espresso that has been sitting on a shelf for months will not pull a good shot no matter how perfect your technique is, because the aromatics and the oils that make crema are long gone. Buy whole beans with a roast date on the bag, not a “best by” date, and use them within about three to four weeks of that roast. One odd wrinkle: very fresh beans, in the first two or three days off the roaster, are still degassing carbon dioxide and can make the shot sputter and taste sharp, so coffee that has rested four or five days actually pulls better than coffee roasted yesterday. Espresso roasts are traditional because the darker roast is forgiving, but any fresh, decent bean can pull a fine shot once you dial it in.

How to pull the shot

Preheat everything. Run a blank shot of just water through the machine and group head, and let your cup sit on top of the machine to warm. A cold cup kills a shot fast. Fill the reservoir and let the machine come up to temperature, which on most home machines means waiting for the ready light.

Dose and level. Grind your 18 grams straight into the portafilter basket and tap or settle it so the bed is even before you tamp. An uneven bed is the number one cause of a bad shot.

Tamp level, not hard. This is where the old advice was wrong. For years everyone, including the old version of this article, told you to press with exactly 30 pounds of force. Forget the number. What actually matters is that you tamp level and consistent every single time. A flat, even puck beats a brutally hard crooked one. Press straight down with firm, even pressure, keep the tamper flat, and wipe any grounds off the rim.

Lock in and pull immediately. Twist the portafilter into the group head until it is snug, put your warm cup underneath, and start the pump right away so the grounds do not sit and bake against the hot metal. The shot should take about 25 to 30 seconds for a double, from the moment you hit the switch to when you stop it at your target weight.

Watch the pour. A good shot starts dripping after a few seconds, then flows in a steady, thin stream the color and thickness of warm honey or a mouse’s tail. It begins dark and gradually blondes out. When it turns pale and thin, you are done pulling flavor and starting to pull bitterness, so stop. Drink it now. Espresso falls apart within a minute or two of being pulled.

Single versus double, and a myth to kill

A reader asked whether you cut the brew time in half to pull a single shot. You do not. This trips up a lot of beginners. A single and a double take about the same time, roughly 25 to 30 seconds. What changes is the basket and the dose: a single basket holds about 9 grams and yields about 1 oz (30 ml), a double basket holds about 18 grams and yields about 2 oz (60 ml). If you halve the time on a double, you do not get a single, you get a gushing, under-extracted, sour mess. Honestly, most home baristas should just pull doubles and drink half if they want less. Singles are finicky.

When the shot comes out wrong

Almost every espresso problem comes down to grind, dose, and tamp, and you fix it by changing one thing at a time. This process is called dialing in.

Shot gushes out fast, too much liquid, tastes weak and sour: this was exactly the problem one reader had, a single running well past 1.5 oz. The water is finding the path of least resistance. Grind finer, make sure you are dosing enough, and tamp level so the water cannot channel around the edges. Finer grind and a fuller, more even puck slow the flow down.

Shot drips out slow, bitter, dark and stingy: the opposite problem. The puck is choking the machine. Grind coarser or dose slightly less. Another reader fixed a weak, watery shot simply by adding more coffee and tamping more evenly, which is the same lever from the other direction.

Change one variable, pull another shot, taste, repeat. That is the entire skill. Nobody nails it on the first try with new beans.

No pressure, no espresso

Two readers asked the same underlying question: can you make espresso in a french press, or is espresso just steam through grounds? Short answer, no on both. Without roughly 9 atmospheres of pressure you physically cannot produce real espresso, with its crema and its concentrated body. A french press makes good coffee, full immersion, no pressure, no crema. A stovetop moka pot gets closer because it builds a little pressure, maybe 1 to 2 atmospheres, but that is still a fraction of what a real espresso machine produces, so a moka pot makes strong, espresso-style coffee, not the real thing. If crema and true espresso are what you are after, you need a pump machine. We compared affordable ones in the budget espresso machine roundup.

None of this is the masterpiece some baristas make it sound like. It is a handful of variables you learn to feel over a few weeks of pulling shots in your own kitchen. Weigh your dose, grind fine, tamp level, watch the pour, taste, adjust. Do that enough times and the so-called god shot stops being luck and starts being Tuesday.

Last reviewed June 2026. Doses, ratios, and timings are starting points; dial them in to your own beans and machine.