Achieving the perfect espresso TDS is a quest for many coffee enthusiasts. This guide will walk you through the key brewing parameters, step-by-step procedures, and expert tips to help you master the art of extracting the ideal TDS (Total Dissolved Solids) from your espresso shots. Whether you're using a traditional espresso machine or a modern espresso machine with PID control, the principles remain the same.
Overview & Background
Espresso is a concentrated coffee beverage made by forcing nearly boiling water under high pressure through finely-ground coffee beans. The TDS of espresso is crucial as it directly impacts the flavor profile. A well-balanced espresso should have a TDS between 1.2% and 1.6%. Lower TDS can result in a weak, watery shot, while higher TDS can lead to a bitter, over-extracted espresso.
Key Brewing Parameters / Specs
- Water Temperature: 90-96°C (194-205°F)
- Grind Size: Extremely fine, similar to powdered sugar
- Water to Coffee Ratio: 1:1 (16g of water per 16g of coffee)
- Extraction Time: 25-30 seconds
- Bar Pressure: 8-9 bar
Step-by-Step Guide
- Grind Your Coffee: Use a burr grinder to achieve a consistent, extremely fine grind.
- Preheat Your Equipment: Ensure your espresso machine, portafilter, and group head are preheated.
- Dose the Coffee: Use 16g of coffee per shot.
- Tamp the Coffee: Tamp evenly with moderate pressure (around 30 pounds).
- Pull the Shot: Start with the espresso machine's steam wand to ensure the group head is hot. Pull the shot for 25-30 seconds.
- Measure TDS: Use a refractometer to measure the TDS of your espresso shot. Aim for 1.2% to 1.6%.
Pro Tips & Common Mistakes
- Consistent Temperature: Maintain a consistent water temperature of 90-96°C (194-205°F).
- Watch the Extraction Time: Ensure your shot extracts for 25-30 seconds to avoid under- or over-extraction.
- Preheat Properly: Proper preheating of all equipment is crucial to prevent temperature fluctuations.
- Avoid Over-Tamping: Over-tamping can lead to uneven extraction and a compacted puck, affecting the flow of water.
- Regular Maintenance: Keep your grinder and espresso machine clean to ensure optimal performance.
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.