Brewing

Master the phin

Four pieces of metal, no paper, no electricity, no moving parts. It is the simplest brewer in common use anywhere, and almost everything that goes wrong with it comes down to three variables: grind, dose and how hard you screwed the press down.

A stainless phin resting on a glass, a single drop of coffee falling into condensed milk below.

Anatomy

What the four parts do

The press plate is the only adjustment on the whole device, and it is the one people get wrong.

Cross-section of a Vietnamese phin coffee filterFrom top to bottom: a domed lid; a perforated press insert; a bed of ground coffee; the brewing chamber that holds the water; a perforated base plate that acts as the filter; and below it the glass that catches the coffee. Water added to the chamber soaks through the coffee bed and drips through the perforated base into the glass.LidKeeps heat in while the coffee dripsPress / gravity insertSets the resistance the water meetsGround coffee15–25 g, medium-coarseBrewing chamberHolds the water above the bedPerforated baseThe filter — no paper neededThe glassCondensed milk waits here, if you use itWaterCoffee
The four parts of a phin, and the path water takes through them.

Tool

Phin brew calculator

Set your dose and water; everything below updates. These are starting points, not rules — grind, coffee density, filter design and how hard you screw down the press all move the result.

10 g40 g
50 ml320 ml
Phin size

Single serve — the café standard

Ratio1 : 5Traditional strength
  1. 1
    Bloom with 20 ml

    Just enough to wet the bed. Wait 30–45 seconds while the grounds swell.

  2. 2
    Pour the remaining 80 ml

    One pour, lid on, and leave it alone.

  3. 3
    Expect 4–6 min

    Much faster and the grind is too coarse or the press too loose; much slower and it is the opposite.

Grind
Medium-coarse — like coarse sand
Water temperature
90–96 °C, just off the boil
If serving sweet
2–3 tbsp condensed milk
If serving iced
A glass of about 160 ml, packed with ice

The range most Vietnamese cafés work in. Strong enough to survive milk and ice, drinkable black if you like it heavy.