Appliances & Heat

Coffee Phin Filter (Phin Cà Phê)

A small metal drip filter that brews strong Vietnamese coffee one cup at a time.

A phin is a single-serve Vietnamese coffee filter made of a perforated chamber, a press disc and a lid that sits on top of a cup or glass. Ground coffee is tamped under the disc and hot water is added to drip slowly through into the cup, often over sweetened condensed milk. The gravity-fed brew is rich and concentrated, requiring no electricity or paper filters.

The phin — short for the French filtre from which it evolved during Vietnam's colonial period — is a small four-piece stainless steel (or, traditionally, aluminum) drip brewer that produces one intensely flavored cup of coffee at a time. Unlike a paper pour-over or a French press, the phin is a lidded metal chamber with a perforated press plate that rests gently on the bed of grounds, so extraction happens by slow gravity through a moderately packed bed. That 3-to-5-minute contact with hot water, in metal that holds heat well, is what gives Vietnamese coffee its characteristic thickness and concentration — closer in body to a moka pot than to a V60.

For all its simplicity, the phin is unforgiving in narrow ways. The grind must be coarse — about the size of raw sugar — and the dose must be modest, because the chamber is small and the press plate leaves little headroom. Get those right and the brewer is remarkably forgiving: it needs no electricity, no paper filter, and almost no attention beyond a one-drop-per-second pace. Get them wrong and the bed chokes (too fine, over-packed) and turns bitter, or finishes too fast (too coarse, under-packed) and tastes thin.

What makes the phin worth owning is what it does with very little: a small, dense, hot shot of brew that becomes the backbone of cà phê sữa đá, cà phê trứng, and any kitchen use that calls for a strong coffee concentrate — from bánh fillings to after-dinner sipping — all without paper filters, electricity, or an espresso machine.

Alternatives

Pour Over DripperFrench PressMoka Pot

Types & varieties

Standard Stainless Steel Phin (size S)

The everyday workhorse; single serve, ~90–120 ml, four-piece construction with screw-down press plate.

Aluminum Phin (cổ điển)

Older traditional style, lighter weight, slightly faster drip; prized by purists but requires more careful cleaning to avoid oxidation and metallic taste.

Handmade Brass / Copper Phin

Artisan or souvenir versions, often from Hội An; heavier, retain heat well, develop a patina with use.

Phin size M / L (multi-serve)

Larger chambers brewing 2–4 cups at once; same construction, used in cafés or for groups.

Foldable / Travel Phin

Collapsible silicone or thin stainless versions for travel; less consistent extraction than a rigid metal phin.

Removable-Screen vs. Integrated-Screen Phin

Removable screens deep-clean easily; integrated designs typically give a more even bed of grounds and a steadier drip.

Tuning the brew

The phin's character changes dramatically across a narrow range of variables, and the difference between a balanced cup and a bad one usually comes down to three things working together: grind size, dose weight, and water temperature. A dose of roughly 18–22 g of coarse-ground coffee in a standard single-serve phin, bloomed with 20–30 ml of water at 92–95 °C, then topped up, gives the most reliable extraction across bean types and roasts. Adjust one variable at a time and watch the drip — that steady bead is your only honest gauge.

Dose: 18–22 g of coarse ground coffee for a standard single-serve phin, roughly 2–3 rounded tablespoons.
Water temperature: 92–95 °C — boil, then rest 20–30 seconds before pouring.
Bloom: pour just enough water to saturate the grounds (20–30 ml), wait 30–45 seconds, then top up.
Dose adjustment: a heavy or over-tamped bed chokes; a light bed channels. Move in 2 g increments.
Yield: aim for 60–90 ml finished brew; longer contact yields a thicker, more concentrated cup.

Common uses

Brewing cà phê sữa đá — Vietnamese iced coffee with sweetened condensed milk poured over ice.Brewing cà phê sữa nóng — the hot version, condensed milk on the bottom, brewed coffee poured over.Brewing cà phê đen / cà phê đá — black Vietnamese coffee, served hot or over ice, with no milk.Making cà phê trứng (egg coffee) — the strong phin brew is the base whisked with egg yolk and condensed milk.Producing a concentrated coffee shot for cocktails, dessert sauces, or Vietnamese coffee–flavored bánh.Single-serve drip brewing when you want a small, intense cup without electricity, paper filters, or a full pour-over setup.

Tips & pitfalls

Coarse grind is non-negotiable: too fine and the phin chokes and overflows; too coarse and the brew finishes in under a minute and tastes thin.
Preheat the phin and the receiving cup with a splash of hot water before brewing — cold metal drops the bed temperature and dulls extraction.
Bloom first: pour just enough water (about 20–30 ml) to saturate the grounds, wait 30–45 seconds, then top up. This degasses the coffee and prevents channeling.
Set the press plate gently and give it a slight twist — do not screw it down hard. Tight tamping slows the drip and over-extracts.
Aim for a steady, slow drip of roughly one drop per second; a steady stream means the grind is too coarse, no drip after a minute means too fine or over-packed.
Sweetened condensed milk goes in the receiving cup before brewing, not after — the hot coffee melts and partly caramelizes it as it drips through.
Clean the press plate's holes with a small brush after every use; clogged holes are the leading cause of slow, bitter brews.
Let freshly boiled water rest 20–30 seconds before pouring. Water straight off the stove scalds the grounds and turns the cup bitter.
Cover the phin with its lid during the main drip; it acts as a small insulator and keeps the bed hot.

Good to know

Origin: Vietnam; emerged in the late 19th–early 20th century during the French colonial period, evolving from the French filtre. The word 'phin' is the Vietnamese shortening of filtre.
Capacity: Single serve, typically 60–180 ml (most commonly 90–120 ml per brew).
Material: Stainless steel is standard; older or traditional versions are aluminum; artisan versions use copper or brass.
Components: Four parts: funnel-shaped filter chamber, perforated press plate (đĩa nén) with a handle or screw, drip spout, and lid (nắp).
Brew Time: 3–5 minutes from pour to last drop for a standard single-serve phin.
Ideal Grind: Coarse — roughly the size of raw sugar, similar to a French press grind; not espresso-fine and not drip-medium.
Water Temperature: Just off the boil, around 90–96 °C (195–205 °F).
Coffee Dose: Approximately 15–25 g (2–3 rounded tablespoons) of coarse ground coffee per single-serving brew.
Yield: 60–90 ml of finished brew, depending on dose and drip time.
Drip Rate Target: About 1 drop per second once steady flow begins; faster usually means the grind is too coarse or the press is too loose.
Storage / Care: Hand-wash after every use; scrub the press plate holes to clear coffee-oil buildup; air-dry fully to prevent off-flavors.