A phin is a small Vietnamese metal brewer that sits directly on a cup. It needs no paper filter, electricity or large coffee station. The method combines a short steep with gravity filtration, producing a compact cup that can be served black, with condensed milk or over ice.
Parts of a phin
Most phins have a saucer or base filter, a brewing chamber, a perforated insert and a lid. Some inserts rest on the coffee by gravity; others screw into the chamber. The lid keeps heat in and can become a drip tray after brewing.
A practical starting recipe
For a small phin, begin with 18-22g coffee and 80-120g water. Brewer capacities vary, so treat this as a testing range rather than a universal recipe.
- Rinse and preheat the phin and cup with hot water.
- Add medium-fine coffee and gently shake the chamber level.
- Place the insert without forcing it down.
- Add enough hot water to wet the bed, then wait about 30 seconds.
- Fill the chamber, cover it and let the coffee drip.
- Remove the phin when the flow has nearly stopped and stir the drink.
For an iced milk version, continue with the Vietnamese iced coffee method and the more specific Vietnamese iced coffee ratio.
Phin grind size
Start finer than a typical V60 grind but coarser than espresso. A very fine grind can clog the holes or compact under the insert. A coarse grind may run quickly and taste weak. Change one small step at a time and keep dose and water constant while testing. The focused phin grind size guide gives a clearer dial-in process.
Pre-ground Vietnamese coffee can be a sensible starting point when its package recommends phin use. If grinding fresh, read our Vietnamese coffee beans guide before choosing roast and blend.
Brew time and drip rate
A few drops should normally appear after the bloom, followed by a steady drip rather than a stream. Four to seven minutes is a useful observation range for many small filters, but a larger phin may behave differently. Taste decides whether the contact time worked.
Common phin mistakes
The coffee will not drip
The grind may be too fine, the insert may be pressing too hard or fine particles may be blocking the base. Grind coarser, reduce compression and make sure the filter holes are clear. See phin coffee dripping too slow if it keeps stalling.
The phin runs too fast
Use a slightly finer grind, increase the dose within the brewer’s capacity or check whether water is escaping around an uneven coffee bed. Do not solve every fast brew by tightening a screw insert aggressively. See phin coffee dripping too fast for a step-by-step fix.
The cup is bitter or dry
Try a coarser grind, slightly cooler water or a shorter ratio. Dark roast and robusta naturally bring more bitterness, but harsh dryness often signals over-extraction or coffee that does not suit your taste.
The cup is weak
Use less water, a little more coffee or a finer grind. Remember that coffee intended for ice should taste concentrated before dilution. The Vietnamese coffee too weak guide covers watery cups in more detail.
Who a phin suits
A phin suits someone who wants compact, inexpensive equipment and does not mind waiting several minutes. It is particularly good for one cup and small kitchens. It is less suitable when you need to brew several drinks quickly or want espresso pressure and steamed milk.
Before buying, compare sizes and insert types in our Vietnamese coffee filter guide, then use phin filter sizes and phin coffee ratio to make your first brews repeatable. If the drip speed feels wrong, the phin troubleshooting guide walks through the fixes.
Make the technique repeatable
Keep dose and total water constant while changing grind. Count bloom water inside the total: for 100g water, a 20g bloom leaves 80g for the main pour. Accidentally adding the bloom on top changes the recipe before you have assessed the grind.
Use a safe drip tray when removing the hot phin. Let the grounds cool before emptying, rinse all perforations and dry the parts separately. Store the filter so the insert remains flat rather than being bent beneath other kitchen tools.
Producer recipes vary with their filter designs. Nguyen Coffee Supply’s phin FAQ illustrates why the manufacturer’s own guidance can differ from a general starting range. If your filter came with a recipe, begin there and adjust by taste.
For choosing the finished drink rather than dialling in the filter, continue to how to make Vietnamese coffee at home.
Frequently asked questions
What grind size should I use for phin coffee?
Start around medium-fine: finer than common pour-over coffee but usually coarser than espresso. The right setting is the one that allows a steady drip without stalling and produces balanced flavour.
How long should a phin take to drip?
Many small phins brew in roughly four to seven minutes after the bloom, but capacity, hole pattern, insert pressure and grind all change the flow. Use taste and a steady drip rather than treating one time as mandatory.
Does a phin make espresso?
No. A phin uses gravity and a short steep rather than pump pressure. It makes concentrated filter coffee, not espresso.