The lever espresso machine offers a unique brewing experience, allowing for precise control over water pressure and flow rate. This manual approach is ideal for those who want to craft a perfect espresso shot with a rich crema, but it requires a bit more attention to detail, especially when it comes to the water temperature and grind size.
Overview & Background
Lever espresso machines have been a staple in professional espresso bars since the early days of espresso production. They operate by using a manual lever to pump water through the grounds, allowing for a fine-tuned brewing process. This method offers unparalleled control over the extraction, making it a favorite among baristas seeking maximum customization in their espresso drinks.
Key Brewing Parameters / Specs
- Water Pressure: Typically around 8-9 bar (115-130 psi).
- Grind Size: Fine grind, similar to table salt.
- Water Temperature: 90-96°C (194-205°F).
- Shot Time: 25-30 seconds.
Step-by-Step Guide
- Preparation: Heat water to 90-96°C (194-205°F) using a water kettle or a temperature-controlled boiler.
- Dosing: Measure 15-18 grams of fine-ground coffee per 60ml of water.
- Tamping: Distribute the grounds evenly in a 19mm portafilter and tamp firmly with a tamper to achieve a level surface.
- Shot Brewing: Place the portafilter in the machine and pull the lever down and back to start the extraction. Hold the lever for 25-30 seconds, or until the desired amount of espresso has been extracted.
- Finishing: Remove the portafilter and serve the espresso immediately, ensuring the crema is intact.
Pro Tips & Common Mistakes
- Temperature Control: Consistent water temperature is crucial for a balanced extraction. Use a thermometer to ensure accuracy.
- Grind Consistency: A fine grind is essential for a lever espresso machine. Use a burr grinder to achieve a uniform grind.
- Tamping Pressure: Proper tamping ensures even extraction. Aim for a pressure between 25-30kg.
- Avoid Over-Extraction: Pulling the shot for too long can result in an over-extracted espresso with a bitter taste.
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