Espresso
Manual · Semi-Automatic · Full Automatic
What is Espresso?
Espresso is a concentrated coffee beverage brewed by forcing pressurized hot water through finely ground, compacted coffee. The result is a small, intensely flavored shot topped with crema — the golden foam formed by emulsified oils. Espresso is also the foundation for lattes, cappuccinos, flat whites, and most café drinks.
✦ Best for: Medium to dark roasts with chocolate, caramel, and nutty profiles. Light roasts can also work with careful dialling in.
What You'll Need
- Espresso machine with pump pressure of ~9 bar
- Quality burr grinder capable of fine grinding — this matters more than the machine
- Portafilter and basket (usually included with machine)
- Tamper
- Scale accurate to 0.1g if possible
- Timer
- Small cup or shot glass
⚠️ Important Note
Espresso is the most technically demanding home brew method. A quality burr grinder matters more than the machine itself. If budget is limited, invest in the grinder first.
Brew Parameters
| Parameter | Recommended |
|---|---|
| Coffee dose (in) | 18g (double shot) |
| Yield (out) | 36–38g (1:2 ratio) |
| Brew time | 25–30 seconds |
| Water temperature | 90–94°C (194–201°F) |
| Pressure | 9 bar |
| Grind size | Fine — like powdered sugar |
Step-by-Step Brew Guide
-
Flush your machine with hot water through the group head to stabilize temperature. Discard that water.
-
Grind 18g of fine coffee directly into the portafilter basket.
-
Distribute the grounds evenly — use your finger or a distribution tool to level the bed with no clumps or gaps.
-
Tamp firmly and evenly with approximately 15–20kg of pressure. The surface should be perfectly level and smooth.
-
Lock the portafilter into the group head. Place your scaled cup underneath.
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Start the shot and timer simultaneously. The first drops should appear around 5–8 seconds in.
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Stop the shot at your target yield (36–38g). Total time should be 25–30 seconds.
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Assess color, crema, time, and taste — then adjust your grind for the next shot if needed.
☕ Pro Tip
Only change one variable at a time when dialling in. Start with grind size, then dose, then yield. Keep a simple log — what worked yesterday may need tweaking tomorrow.
Dialling In: Grind Adjustments
| Situation | Action |
|---|---|
| Shot too fast (<20 sec) | Grind finer — slow down the flow |
| Shot too slow (>35 sec) | Grind coarser — speed up the flow |
| Sour / sharp taste | Under-extracted — grind finer |
| Bitter / harsh taste | Over-extracted — grind coarser |
| Correct time, still sour | Increase dose slightly |
| Correct time, still bitter | Decrease dose slightly |
Milk Drinks Quick Reference
| Drink | Recipe |
|---|---|
| Espresso | 30–40ml shot, served straight |
| Americano | Double shot + 120–180ml hot water |
| Flat White | Double shot + 120ml steamed milk, thin microfoam |
| Latte | Double shot + 180–240ml steamed milk, creamy foam |
| Cappuccino | Double shot + equal parts milk + thick, dry foam |
Troubleshooting
| Problem | Likely Cause | Fix |
|---|---|---|
| No crema | Stale beans or grind too coarse | Use fresh beans, grind finer |
| Bitter shot | Over-extracted | Grind coarser, reduce yield |
| Sour shot | Under-extracted | Grind finer, extend time |
| Channeling | Uneven tamp or distribution | Distribute evenly, tamp flat |
| Shot "blondes" early | Grind too coarse | Adjust finer in small increments |
