How to Make Trung Nguyen Coffee: Step-by-Step Guide

Quick answer

• Use a Vietnamese coffee filter (phin) for the authentic experience.
• Coarsely ground coffee is key, like sea salt.
• Bloom the coffee grounds with a little hot water first.
• Slowly add the rest of the hot water.
• Let it drip completely.
• Sweeten with condensed milk to taste.
• Add ice for a refreshing finish.

Who this is for

• Coffee lovers looking to explore unique brewing methods.
• Anyone who enjoys rich, bold coffee with a sweet kick.
• People wanting to recreate a cafe-style Vietnamese coffee at home.

What to check first

Brewer type and filter type

You’re aiming for that classic Vietnamese coffee experience, right? That means a metal Vietnamese coffee filter, often called a phin. It’s usually a small, cylindrical device with a perforated plate and a plunger. If you’re using something else, you’re not really making Trung Nguyen coffee in the traditional way. Check the manual for your specific phin if you’re unsure how the pieces fit together.

You’re aiming for that classic Vietnamese coffee experience, right? That means a metal Vietnamese coffee filter, often called a phin. If you’re looking to get started, this Vietnamese coffee filter is a great option.

Water quality and temperature

Good coffee starts with good water. If your tap water tastes funky, your coffee will too. Consider filtered water. For Trung Nguyen coffee, you want your water hot, but not boiling. Aim for around 195-205°F (90-96°C). Too hot, and you’ll scorch the grounds, leading to bitterness. Too cool, and you won’t extract enough flavor.

Grind size and coffee freshness

This is huge. For a phin, you need a coarse grind, similar to sea salt or coarse sand. Too fine, and it’ll clog the filter and over-extract. Too coarse, and the water will rush through, giving you weak coffee. Freshly ground beans are always best. Coffee starts losing its flavor compounds within minutes of grinding.

This is huge. For a phin, you need a coarse grind, similar to sea salt or coarse sand. Using a quality coarse ground coffee, like this one, is essential for the right extraction.

Coffee-to-water ratio

This is where personal preference really shines. A good starting point for Trung Nguyen coffee is about 2 tablespoons of coffee grounds per 6 ounces of water. But don’t be afraid to adjust. If it’s too strong, use less coffee next time. Too weak? Add a bit more. It’s your cup, make it how you like it.

Cleanliness/descale status

A dirty brewer is a flavor killer. Rinse your phin thoroughly after each use. Over time, coffee oils build up. You’ll want to give it a good soak and scrub every so often. If you have a drip machine or other equipment involved, make sure it’s descaled according to the manufacturer’s instructions. Nobody wants chalky coffee.

Step-by-step (brew workflow)

1. Prepare your phin. Assemble the four main parts: the filter chamber, the insert press (the part that goes inside), the lid, and the drip tray.

• What “good” looks like: All parts are clean and ready to go. The insert press should fit snugly inside the filter chamber.
• Common mistake: Forgetting to put the insert press in before adding coffee. You’ll have to dump it all out.

2. Add coffee grounds. Spoon about 2 tablespoons of coarsely ground coffee into the filter chamber.

• What “good” looks like: The grounds are evenly distributed at the bottom of the chamber.
• Common mistake: Tamping the grounds down too hard with the insert press. This will make the water flow too slowly.

3. Place the insert press. Gently place the insert press on top of the coffee grounds. Don’t press down hard. Just let it rest.

• What “good” looks like: The press sits flat on the coffee, creating a slight seal.
• Common mistake: Pressing too hard, compressing the coffee grounds. This is a recipe for a slow, bitter brew.

4. Add a little hot water (the bloom). Pour about 1-2 tablespoons of hot water (195-205°F) over the grounds.

• What “good” looks like: The grounds will swell and bubble a bit. This is the “bloom,” releasing CO2.
• Common mistake: Pouring too much water. You want just enough to wet the grounds.

5. Wait for the bloom. Let the coffee bloom for about 30 seconds.

• What “good” looks like: The bubbling subsides, and the grounds look saturated.
• Common mistake: Rushing this step. The bloom is crucial for even extraction.

6. Add the remaining hot water. Slowly pour the rest of your hot water into the filter chamber, filling it up.

• What “good” looks like: The water is evenly distributed over the grounds.
• Common mistake: Pouring too quickly or unevenly. This can cause channeling, where water bypasses some grounds.

7. Place the lid. Put the lid on the phin to retain heat.

• What “good” looks like: The lid is securely in place.
• Common mistake: Leaving the lid off. This lets precious heat escape.

8. Let it drip. The coffee will slowly drip through the phin into your cup below. This can take several minutes.

• What “good” looks like: A steady, consistent drip. You’ll see a rich, dark liquid forming.
• Common mistake: Getting impatient and lifting the phin too early. Let it finish.

9. Add condensed milk. Once the dripping stops, add sweetened condensed milk to your taste. Start with a tablespoon or two.

• What “good” looks like: A creamy, sweet addition that complements the coffee.
• Common mistake: Adding too much condensed milk initially. You can always add more.

10. Stir well. Stir the coffee and condensed milk until fully combined.

• What “good” looks like: A uniform, creamy texture.
• Common mistake: Not stirring enough, leaving pockets of condensed milk.

11. Add ice. Fill a glass with ice cubes.

• What “good” looks like: Plenty of ice to chill the coffee.
• Common mistake: Not using enough ice, resulting in a lukewarm drink.

12. Pour over ice. Pour the sweetened coffee over the ice.

• What “good” looks like: A refreshing, chilled beverage ready to enjoy.
• Common mistake: Pouring too fast, splashing. Take your time.

Common mistakes (and what happens if you ignore them)

Mistake	What it causes	Fix
Using too fine a grind	Clogged filter, slow drip, bitter, over-extracted coffee	Use a coarser grind, like sea salt.
Tamping the coffee grounds too hard	Water can’t flow, leading to bitterness and weak flavor	Gently place the insert press, don’t press down.
Using boiling water	Scorched grounds, harsh, burnt taste	Let water cool slightly, aim for 195-205°F.
Not blooming the coffee	Uneven extraction, less flavor, potential sourness	Add a small amount of water first and let it sit for 30 seconds.
Rushing the drip process	Under-extracted, weak, sour coffee	Be patient and let the water drip completely through the grounds.
Using stale coffee beans	Flat, dull flavor, lacks aroma	Use freshly roasted beans and grind them just before brewing.
Not cleaning the phin regularly	Rancid oils build up, affecting taste	Rinse after each use and deep clean periodically.
Using poor quality water	Off-flavors, dull coffee	Use filtered or spring water for a cleaner taste.
Incorrect coffee-to-water ratio	Too strong or too weak coffee	Start with 2 tbsp coffee per 6 oz water and adjust to your preference.
Not stirring the condensed milk properly	Inconsistent sweetness, unpleasant texture	Stir thoroughly until well combined.

Decision rules (simple if/then)

• If your coffee tastes bitter, then try a coarser grind because fine grinds over-extract.
• If your coffee is weak and sour, then try a finer grind or use more coffee because under-extraction is the issue.
• If the water drips too slowly, then your grind is likely too fine or you tamped too hard because it’s blocking the flow.
• If the water drips too fast, then your grind is too coarse or you didn’t tamp enough because the water is rushing through.
• If your coffee tastes burnt, then your water was too hot because boiling water scorches the grounds.
• If your coffee lacks aroma and flavor, then your beans are likely stale or not freshly ground because freshness is key.
• If you’re getting an oily residue in your coffee, then your phin needs cleaning because built-up coffee oils can affect taste.
• If the coffee tastes “off” or chemical, then check your water quality because tap water can sometimes impart unwanted flavors.
• If you want a stronger coffee flavor, then increase the amount of coffee grounds you use, keeping the water amount consistent.
• If you want a sweeter coffee, then add more condensed milk, but do it gradually to avoid overwhelming the coffee.
• If you prefer a less sweet coffee, then use less condensed milk or try a darker roast coffee which can stand up to sweetness better.

FAQ

What kind of coffee beans should I use for Trung Nguyen coffee?

While Trung Nguyen is a famous Vietnamese coffee brand, you can use any medium to dark roast coffee. A common recommendation is Robusta or a Robusta-Arabica blend for that classic bold flavor.

How much coffee should I put in my phin?

A good starting point is about 2 tablespoons of coffee grounds for every 6 ounces of water. Adjust this ratio based on how strong you like your coffee.

Can I use an espresso grind for my phin?

No, an espresso grind is far too fine. It will clog the filter and result in a bitter, over-extracted brew. You need a coarse grind, similar to sea salt.

Why is my coffee dripping so slowly?

This usually means your coffee grind is too fine, or you’ve tamped the grounds down too hard. Try a coarser grind and avoid pressing the insert filter.

Is it okay to use pre-ground coffee?

It’s best to use freshly ground coffee for optimal flavor. If you must use pre-ground, make sure it’s a coarse grind specifically for Vietnamese coffee makers.

How much condensed milk is typical?

This is purely to taste. Start with a tablespoon or two and stir. You can always add more if you prefer it sweeter.

Can I make iced coffee without a phin?

While the phin is traditional, you could brew a strong batch of coffee using another method (like a Moka pot or French press) and then sweeten it with condensed milk and pour over ice. It won’t be exactly the same, though.

How do I clean my Vietnamese coffee filter (phin)?

Rinse all parts thoroughly with hot water after each use to remove coffee oils. Periodically, you can soak the parts in a mixture of hot water and a little vinegar or baking soda to remove stubborn buildup.

What this page does NOT cover (and where to go next)

• Specific brand recommendations for Trung Nguyen coffee beans. (Next: Explore specialty coffee roasters offering Vietnamese-style blends.)
• Advanced techniques for controlling bloom time with precise timers. (Next: Look into guides on pour-over coffee techniques for finer control.)
• The history of Vietnamese coffee culture. (Next: Research articles on the origins and evolution of coffee in Vietnam.)
• Comparisons of different phin materials (e.g., stainless steel vs. aluminum). (Next: Read reviews comparing various brewing equipment.)
• Alternative brewing methods for making strong coffee. (Next: Explore guides on Moka pots or Aeropress brewing.)