"Vietnamese coffee" is not one thing — it's a method, a culture, and increasingly something people want to replicate outside of Vietnam (베트남 / 越南 / ベトナム). The "phin", the small stainless-steel drip filter that sits on top of your glass, is the heart of it. Getting a decent cup at home is straightforward once you understand the three variables: the filter, the bean, and the grind.

Which Phin to Buy

Phins come in three materials: aluminium, stainless steel, and cheap plated alloy. Buy stainless steel. Aluminium affects flavour over time and the cheap plated versions warp after a month of daily use.

Size matters more than most guides admit. Phins are sold by volume — 4 cl, 6 cl, 8 cl, and 12 cl are the common sizes. A 6 cl phin is the right call for a single serving. Smaller filters make the brew too concentrated for most people's taste unless you're specifically making "ca phe sua da (연유커피 / 越南冰咖啡 / ベトナムアイスコーヒー)" (iced coffee with condensed milk), where dilution from ice compensates. The 12 cl size is useful if you're brewing for two.

What to Look for in the Hardware

  • Filter plate (the inner press): It should screw down with resistance, not drop loosely. Loose plates mean water bypasses the coffee too fast.
  • Chamber walls: Check for uniform thickness. Thin-walled chambers cool down quickly, which stalls the brew mid-drip.
  • Lid: Some phins come with a flat lid that doubles as a saucer. This helps retain heat during the 4–5 minute brew. Don't skip it.

In Vietnam, you can buy a decent stainless phin at any Bep Xua or household goods shop for 25,000–60,000 VND. Outside Vietnam, look for Vietnamese-brand phins (Trung Nguyen or Phuc Long sell branded sets) on regional e-commerce platforms. Avoid generic "Vietnamese coffee (베트남 커피 / 越南咖啡 / ベトナムコーヒー) filter" sets on mass-market sites — the filter plates are often poorly machined.

Where to Source Good Beans

Vietnam's two main growing regions are Da Lat (Lam Dong province, central highlands (중부 고원 / 中部高原 / 中部高原)) and Buon Ma Thuot (Dak Lak province). They produce very different cups.

Da Lat (달랏 / 大叻 / ダラット) beans are predominantly Arabica, grown at around 1,500 m elevation. The cup is lighter, slightly acidic, with floral or fruit notes depending on processing. Da Lat coffee suits people who find traditional Vietnamese robusta too heavy. If you're in or near Da Lat, the Cho Da Lat (Da Lat Market) has roasters selling 100g bags starting at around 35,000 VND. K'Ho Coffee, run by a Lat minority family in Cu Lan village, has become a reputable name for washed and natural-process Arabica — they ship domestically and internationally.

Buon Ma Thuot beans are mostly Robusta, Vietnam's dominant commercial variety. High caffeine, low acidity, chocolatey and bitter with a thick body. This is the bean that makes "ca phe sua da" work — the intensity cuts through sweetened condensed milk and ice without disappearing. Buon Ma Thuot Robusta is cheap in Vietnam (50,000–80,000 VND per 500g at wet markets), but harder to source as single-origin outside the country. Trung Nguyen Legend is the largest brand and widely exported; their "Sang Tao 1" blend is a reasonable starting point, though serious coffee drinkers will find it over-roasted.

For sourcing outside Vietnam, specialty importers in Australia, the US, and Germany have started carrying Vietnamese single-origin. Search specifically for "Dak Lak Robusta" or "Lam Dong Arabica" — generic "Vietnamese coffee" labelling often means a dark-roasted blend with no traceability.

Elderly woman cooking traditional Vietnamese dish in Đà Lạt night market, Việt Nam.

Photo by LUC PH@M on Pexels

Grind Size

This is where most people go wrong. The phin is a slow drip filter, not a French press and not a pour-over. You want a medium-coarse grind — coarser than espresso, finer than a French press. If your grind is too fine, the water won't pass through in a reasonable time and you'll get an over-extracted, bitter cup. Too coarse and the water races through in under two minutes, producing a weak, sour result.

Target brew time: 4 to 6 minutes for a 6 cl phin loaded with 12–15g of coffee. If it's dripping in under 3 minutes, go finer. If it's still dripping after 8 minutes, go coarser.

If you're buying pre-ground coffee in Vietnam (common — most roasters will grind to order), tell them it's for a phin. They know. Outside Vietnam, grind fresh if you can.

Brew Technique

  1. Preheat the phin chamber with hot water, dump it out.
  2. Add 12–15g of ground coffee. Shake lightly to level.
  3. Set the filter press on top, press gently — firm but not compacted.
  4. Pour about 20 ml of hot water (93–96°C, not boiling) over the grounds. Wait 30 seconds to bloom.
  5. Pour the remaining water slowly to fill the chamber. Put the lid on.
  6. Wait. Do not agitate.

For "ca phe sua da", add 2–3 tablespoons of sweetened condensed milk to the glass before brewing, then pour the finished drip over ice. For "egg coffee", the phin brew is the base — the rest is a separate process worth its own guide.

Close-up of a Vietnamese coffee drip filter brewing in a cozy kitchen interior with blurred background.

Photo by FOX ^.ᆽ.^= ∫ on Pexels

Troubleshooting

Too bitter: Grind coarser, or reduce steep time by loosening the filter press slightly.

Too weak / watery: Grind finer, use more coffee (up to 18g), or check your water temperature isn't too low.

Drip stops completely: The press is too tight or the grind is too fine — unscrew the plate a half-turn.

Metallic taste: Your phin is new. Rinse it with boiling water three times before first use. If it persists, you bought the wrong material — switch to stainless.

Practical Notes

A phin and a bag of Buon Ma Thuot Robusta is the most cost-efficient coffee setup you can own — a 500g bag brews roughly 30–35 cups. Clean the phin after every use with warm water; soap is fine once a week. Don't put it in a dishwasher if it has a rubber gasket.

— FIN —

Last updated · May 26, 2026 · independently researched, never sponsored.