Long Steep

AeroPress by Jonathan Gagné

Coffee researcher and astrophysicist Jonathan Gagne designed this AeroPress method around an unusually long immersion. Patient contact and restrained agitation seek high extraction and sweetness without astringency.

1:14.4 Ratio

10:10 Total

18g Dose

100°C Temp

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You'll need

AeroPress valve cap Optional

A valved cap that replaces the AeroPress stock cap to stop dripping, hold water for longer steeps, or build back-pressure for espresso-style shots. Common models: AeroPress Flow Control Filter Cap, Fellow Prismo, Joe Presso (for a true espresso shot, the Prismo’s pressure valve).

Recommended AeroPress Flow Control Filter Cap · Fellow Prismo · Joe Presso

Parameters

18 g
Coffee: 260 g
Water: 1:14.4
Ratio: 100 °C
Temp: 3 fine
Grind: 10:10
Total: ~260 ml
Yield

Grind · 3/10 · fine

FINE COARSE

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Method

10:10 · total

Pour 1 / 8
0:00

15s

Pour 260g gently over the centre of the bed.

+260g→ 260g Fill gently 100°C
Swirl 2 / 8
0:15

20s

Stir gently to settle the bed flat. Let it steep.
Prepare 3 / 8
0:35

5s

Rest the plunger on the surface — don't press down.
Steep 4 / 8
0:40

4m20s

Let it steep.

4m 20s
Swirl 5 / 8
5:00

15s

Swirl gently.
Steep 6 / 8
5:15

3m45s

Let it steep.

3m 45s
Press 7 / 8
9:00

1m10s

Press gently with the weight of your hand.

1m 10s
Done 8 / 8
10:10

Press complete.

Notes

Use 100°C water and stir vertically and front to back, never in circles. A Fellow Prismo helps limit early drip-through, though some leakage is harmless. Keep the bed level and let the full 10 min steep do the extraction work.