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CoffeeLabZ

Espresso by hand: lever and portable presses

Preheat well, pre-infuse gently, then press steadily to a 1:2 shot.

⏱️ 12 minTakes practice

Starting recipe

18 g coffee → 36 g espresso in 25–32 s at about 93 °C (199 °F) in the brew chamber, with 5–10 s of gentle pre-infusion.

Grind: Fine, like powdered sugar that still feels a little gritty

You need

  • 18 g fresh whole beans (or your basket's size)
  • An espresso-capable grinder
  • Your lever machine or portable press, basket and tamper
  • A kettle (a gooseneck makes filling easier)
  • A kitchen scale and a timer
  • A WDT needle tool and a towel

Step by step

  1. Preheat seriously

    Small metal parts steal a lot of heat. For a portable press, fill the brew chamber with just-boiled water and let it sit about a minute. For a lever machine, let the group heat fully. Warm your cup as well.

    Underheated shots taste sour no matter how fine you grind. Preheating is half the battle here.

    60 s
  2. Grind and dose

    Weigh 18 g of beans and grind fine, or use your basket's recommended dose. If your basket is smaller, keep the same 1:2 idea: yield is double the dose.

  3. WDT and tamp

    Stir the grounds with a needle tool to break clumps, tap to level, then tamp straight and firm until it stops compressing.

  4. Assemble and add water

    Empty the preheat water carefully with a towel: it's very hot. Assemble the press, put the cup on the scale and fill the chamber with water just off the boil. Work quickly so nothing cools down.

  5. Pre-infuse gently

    Press very lightly, or pull the lever down until resistance starts, and hold there until the first drops appear under the basket, usually 5–10 seconds. This lets the puck soak evenly before full pressure.

    10 s
  6. Press steadily

    Now increase pressure smoothly to a firm, steady push. If you have a gauge, aim for about 6–9 bar. The flow should look like warm honey, not a spray. Ease off gently as you approach the end.

    If the lever barely moves even when you push hard, the grind is too fine. Don't force it: grind coarser next time.

    25 s
  7. Stop at 36 g

    Stop pressing when the scale reads about 36 g. The whole shot, from first press, should take about 25–32 seconds. Release pressure slowly before taking things apart.

  8. Taste and adjust

    Sour? Grind finer or preheat longer. Bitter? Grind coarser. Change one thing at a time and log each shot.

Common mistakes

  • Skipping or rushing the preheat, which gives sour, thin shots.
  • Slamming to full pressure straight away instead of pre-infusing.
  • Forcing a lever that won't move: grind coarser instead.
  • Taking the press apart while it's still under pressure.
  • Grabbing hot metal parts without a towel.

Tastes off? Fix it

If it…Try this
Sour, even with a fine grindPreheat longer and work faster after preheating. Then grind a small step finer if it's still sour.
Sour and the shot was slowKeep the grind and press a little longer: aim for about 40 g out instead of 36 g.
BitterGrind a small step coarser. If the shot was already quick, keep the grind and stop a little earlier.
WeakStop pressing a little earlier so less liquid lands in the cup.
Too hard to pressThe grind is too fine or the dose too big. Grind coarser first, and check the dose fits your basket.

Words you'll hear

Dose
The weight of dry ground coffee in the basket, in grams. 18 g is a common starting dose for a double shot.
Yield
The weight of liquid espresso in your cup, in grams. Weighing beats measuring by volume because crema makes millilitres misleading.
Ratio
Yield divided by dose. A 1:2 ratio means 18 g of coffee becomes 36 g of espresso. Longer ratios taste lighter, shorter ones more intense.
Extraction
How much flavor the water pulls out of the coffee. Too little tastes sour and thin; too much tastes bitter and dry. You're aiming for sweet in the middle.
Crema
The reddish-golden foam on top of a shot, made from gas and oils. Fresh beans make more of it. It's a nice sign, not a measure of taste.
Portafilter
The handle with the metal basket that holds the coffee and locks into the machine's group head.
Tamp
Pressing the ground coffee flat and firm in the basket so water can't sneak through loose spots.
Puck
The packed disc of coffee in the basket. After the shot it's the damp cake you knock out into the bin.
Channeling
When water finds a weak path through the puck and rushes through it. The shot runs fast and tastes sour and bitter at once.
WDT
Stirring the grounds in the basket with thin needles to break up clumps before tamping. Short for Weiss Distribution Technique.