AeroPress Ratio (1:12 to 1:16)

1

Coffee (medium-fine to medium ground) — Grind is the primary extraction lever: finer grinds extract faster under pressure; coarser grinds require longer steep. 15–17 g is a common single-cup dose.

12 to 16

Water — 90–96 °C (194–205 °F); lower temperatures (80–85 °C) work for light roasts brewed inverted with longer steep

1–2 minutes

Steep time pre-press — Including bloom; total brew including pressing is typically under 3 minutes

20–40 seconds

Pressure stroke — Gentle, even pressure; stop when you hear a hiss (grounds exhausted) to avoid bitter over-press

Standard method: place a paper filter in the AeroPress cap, wet the filter. Set the AeroPress on a mug, add ground coffee, pour a small bloom (2× coffee weight at 90–96 °C), stir. Fill with remaining water to target weight, stir once, steep 1 minute. Attach cap and press gently over 30 seconds. Inverted method: assemble with plunger inserted just far enough to seal, flip inverted, add coffee and water, steep 1.5–2 minutes, attach cap, flip onto mug, press. Inverted method extends steep time and prevents premature drip-through, giving more control over extraction.

• Always wet the paper filter before sealing the cap — this removes papery taste and pre-heats the brewer.
• The AeroPress is unusually forgiving of water temperature: light roasts with cooler water (80–85 °C) and longer steep times produce sweet, low-bitterness cups; dark roasts benefit from higher temps (93–96 °C).
• Stop pressing when you hear air hissing through the puck — continuing past this point extracts bitter compounds from the exhausted grounds.
• Grind is your most powerful dial: finer grind increases resistance under pressure and slows the press, effectively extending extraction time within the pressure phase.
• For travel, the AeroPress can brew with water just off a camping stove or hotel kettle (slightly above target temperature) — agitation and timing compensate.
• The World AeroPress Championship recipes (publicly posted each year) are an excellent resource for ratio and method exploration.

• Espresso-style concentrate (1:6 to 1:8)

  Well outside the standard range but used by World AeroPress Champions; fine grind, short steep, produces a 40–60 ml shot diluted with hot water or milk

• Inverted long steep (1:14, 2 minutes)

  The most common competition and enthusiast method; full immersion without drip-through produces even, reproducible extraction

• Cold AeroPress (1:12, room temp water)

  Steep 3–5 minutes at room temperature; yields a cold-serving cup without refrigeration; less smooth than cold brew but far faster

• Metal filter AeroPress

  Omits paper; retains oils similar to French press; works best at slightly coarser grind with strong ratios (1:12 to 1:13)

• Two-cup bypass method

  Brew at 1:6 concentrate, then add hot water in the cup to total 1:15 — a manual americano approach popular for travel brewing

• French Press Ratio (1:12 to 1:15)

  Same immersion range but no pressure phase and no paper filter; produces oilier, heavier cup

• Pour-Over Ratio (1:15 to 1:17)

  Paper-filtered like AeroPress but gravity-driven; requires coarser grind and longer draw-down time to match extraction

• Espresso Ratio (1:1 to 1:3)

  High-pressure extraction at machine level; AeroPress at 1:6 is a manual approximation of the espresso concentration spectrum

1. 1.The World Atlas of Coffee — James Hoffmann (2014)
2. 2.World AeroPress Championship published recipes — worldaeropresschampionship.com (annual)
3. 3.The Coffee Compass — Michael Sivetz and Norman Desrosier (1979, foundational extraction theory)
4. 4.SCA Brewing Control Chart — Specialty Coffee Association

Confidence: high