Key Insight
Extended immersion (10+ minutes) at near-boiling temperature (99-100C) produces remarkably sweet, complex cups from the AeroPress.
The Science
- Longer immersion lets coffee particles reach near-equilibrium with the slurry, similar to high-extraction drip coffee.
- Astringency comes from polyphenols released during channeling -- avoid by pressing gently and keeping the coffee bed flat.
Recipe
- 18g coffee, 260g water at 100C
- Stir back-and-forth (not circular)
- Place plunger, swirl at 0 and 5 minutes
- Press very gently at 9+ minutes
- Average extraction yield: 23.5%
Tips
- Use Fellow Prismo to prevent side bypass
- Avoid dark roasts at 100C (lower temperature instead)
- Swirl at 5 minutes instead of re-stirring
- Fine-to-medium grind with minimal fines
Key Takeaways
- Extended immersion, near-boiling water, gentle pressing, flat coffee bed
- Produces sweetness and complexity rivaling high-extraction drip