Redefining the Hario Switch: A Masterclass in Hybrid Immersion

Essential Gear and Ingredients

To execute this approach, gather the following components:

• Brewer: Hario Switch with a glass V60 top.
• Filter: Cafec T-90 paper filters for optimal flow rate.
• Coffee: 15g of high-quality light roast (e.g., Finca Soledad Typica Mejorado).
• Water: 250g total, split between a 75°C bloom and 90°C main pours.
• Tools: A Kinto server, a precision scale, and a modified "bent" spoon for gentle excavation.

The Step-by-Step Procedure

1. The Samo Bloom: Close the switch. Pour 50g of 75°C water into the empty brewer first, then add your grounds. This prevents fines from being driven into the paper. Stir gently with the back of a spoon to ensure full saturation. Wait 60-90 seconds, then release.
2. First Immersion: Close the switch. Place a spoon inside the brewer and pour 100g of 90°C water directly onto the spoon to avoid disturbing the coffee bed. Use the spoon to gently excavate the grounds from the bottom. Steep for 60-90 seconds and release.
3. Final Extraction: Repeat the second step with the final 100g of water. The goal is to keep the coffee bed intact as a secondary filtration unit, which traps fines and produces a sparklingly clean cup.

Troubleshooting and Refinement

If the cup feels muted, extend the final steep time. Because immersion extraction slows down as the water becomes saturated, it is difficult to over-extract. Conversely, if you notice clogging, ensure you are pouring onto the spoon rather than the coffee bed. Using the bed as a filter is the secret to consistency across different grinder types.

The Expected Result

This technique yields a cup with significantly higher sweetness and a juicier body than traditional percolation. By integrating fresh solvent at three distinct stages, you maximize extraction potential without the bitterness associated with high-turbulence pours.