Lever espresso machines, known for their simplicity and precision, offer a unique brewing experience. By manually pulling the lever, baristas have direct control over the pressure and extraction time, resulting in a rich, velvety shot of espresso. However, mastering the lever technique requires a keen understanding of water temperature, grind size, and the precise adjustments needed for optimal extraction.
Overview & Background
Lever espresso machines have a long history dating back to the early 19th century. Unlike pump-driven espresso machines, lever machines rely on the manual effort of the barista to create pressure. This manual control allows for a more nuanced approach to brewing, emphasizing the importance of technique and experience.
Key Brewing Parameters / Specs
- Water Temperature: 92-96°C (198-205°F)
- Grind Size: Fine, similar to table salt
- Shot Volume: 30-35 grams of coffee grounds for a 30-second shot
- Pressure: 8-10 bars
- Extraction Time: 25-30 seconds
Step-by-Step Guide or Comparison Matrix
Adjusting the Lever Espresso Machine
- Preheat the Group: Start by preheating the group head with hot water for about 15-20 seconds to ensure the temperature is stable.
- Grind the Coffee: Use a fine grind, similar to table salt, and distribute it evenly in the portafilter.
- Tamp the Coffee: Compact the grounds evenly with moderate pressure to ensure a consistent density.
- Start the Lever: Begin pulling the lever slowly, focusing on a steady and controlled movement.
- Adjust Pressure: Monitor the shot's flow and adjust the pressure by slightly changing the speed of the lever pull. Aim for a steady extraction rate.
- Finish the Shot: Continue pulling until the desired shot volume is reached, typically 30-35 grams in 25-30 seconds.
Pro Tips & Common Mistakes
Pro Tips
- Use a consistent grind size and tamping pressure for repeatable results.
- Practice pulling the lever with a smooth, even motion to achieve consistent extraction.
- Regularly clean and descale the machine to maintain optimal performance.
Common Mistakes
- Over-tamping the coffee grounds, which can lead to a slow and inconsistent extraction.
- Pulling the lever too quickly, which can result in over-extraction and a bitter shot.
- Not preheating the group, which can lead to temperature fluctuations and uneven extraction.
Gear worth owning
Recommended gear for this recipe.
Two practical upgrades that make this method easier to repeat. We may earn a commission if you buy through these links.
Affiliate disclosure: prices and availability change. BrewVibe Lab is reader-supported and independently edited.