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Origami Ultimate Field Guide | VIHI Design

December 12, 2025 · Vihi Research

Origami Dripper: Ultimate Field Guide to Geometry, Filters, Flow, Grind & Recipe Matrix (with Troubleshooting)

Contents
  1. 1) Geometry First
  2. 2) Filter Papers: Types & Fit
  3. 3) Flow Targets & Timing
  4. 4) Grind Matrix (EK / 64-mm flat / conical)
  5. 5) Pro Recipes (light / medium / dark)
  6. 6) Troubleshooting (collapse, stall, sour/bitter)
  7. 7) Further Reading

1) Geometry First

Origami’s petal ribs deliver high clarity—but only if air channels stay open. Paper angle variance from stacked packaging can cause sticking and collapse. Pre-shape the paper to normalize pleats before brewing.

Tip: Pre-form with a shaping tool (e.g., V-Fold) for even angles; then seat the paper carefully so each rib has contact without choking channels.

2) Filter Papers: Types & Fit

  • Hario V60 cone: very expressive; sensitive to pour pattern.
  • CAFEC cone: usually faster; watch for early under-extraction.
  • “Thicker” cones: slower, cleaner; raise grind or lower dose to keep time in range.

Rule: If time swings >±15 s between cups, the geometry (paper fit) is the first suspect—pre-shape, then re-seat.

3) Flow Targets & Timing

  • Total time targets (15–18 g dose): 2:20–2:45 (±10 s).
  • Too fast → finer grind or slightly higher bloom ratio; too slow → coarser or gentler wall contact.
  • Bloom: 25–40 g / 15–30 s; avoid hard wall impact on the first pour.

4) Grind Matrix

  • EK43: 7.5–8.5 (light roast tilt finer; dark tilt coarser)
  • 64-mm flat: espresso reference + 8–12 clicks outward
  • Conical: set by time first (2:20–2:45), then taste trim

Feedback loop: If drawdown steady but flavor hollow → finer + smaller pulses; if astringent/flat → coarser + smoother pours.

5) Pro Recipes

Light roast clarity (18 g → 270 g, 94 °C)
Bloom 40 g / 30 s → three 75–80 g pours. Target 2:30–2:45.

Medium roast balance (16 g → 240 g, 93 °C)
Bloom 30 g / 25 s → two 100–105 g pours. Target 2:25–2:40.

Dark roast sweetness (15 g → 225 g, 92 °C)
Bloom 25–30 g / 20 s → gentle pulses 50–60 g each. Target 2:10–2:30.

6) Troubleshooting

  • Collapse / sticking: pre-shape paper, reduce bloom mass, avoid early wall hits, slightly coarser grind. See our collapse guide.
  • Random time swings: paper geometry first → re-seat; then adjust grind 1–2 notches.
  • Sour / thin: finer grind, slightly hotter water, extend total time by ~10–15 s.
  • Bitter / astringent: coarser grind, lower temp 1–2 °C, avoid over-agitation.

7) Further Reading