Kopi Tubruk: Indonesia's Traditional Coffee

Kopi tubruk is Indonesia’s traditional unfiltered coffee: finely ground coffee goes straight into a glass, often with sugar, and hot water is poured right over it. After a short stir and a few minutes of patience, the grounds sink to the bottom and you sip the strong, thick coffee above them. It is simple, cheap and everywhere on Java, and you can make it at home with nothing more than a glass and a kettle.

What Is Kopi Tubruk?

Kopi is the Indonesian word for coffee, and tubruk is a Javanese word meaning collision, a nod to the hot water colliding with the grounds. The name describes both the drink and the way it is made.

There is no filter, no machine and no paper. The coffee is ground fine, mixed directly with just-boiled water and served in a clear glass, so you can see the layer of grounds that settles at the bottom. It is usually sweetened, sometimes heavily. One popular explanation is that Middle Eastern merchants introduced this style of unfiltered coffee to Indonesia, which would explain its family resemblance to Turkish coffee, though kopi tubruk is never boiled in a pot.

Learn the other two methods in our guides to Turkish coffee and cowboy coffee.

Coffee in Indonesia: Why Java Means Coffee

Indonesia has grown coffee since Dutch colonial times, beginning on Java in the late 1600s. Coffee from the island became so famous that “java” turned into an American nickname for coffee itself. Today Indonesia grows both Arabica and Robusta across many islands, including Java, Sumatra, Bali and Sulawesi.

Kopi tubruk is the everyday way much of that coffee gets drunk at home. It is especially popular in Central Java and Yogyakarta, but you will find it across the country. If you want to explore Indonesian beans, start with our articles on Sumatra coffee and Bali Blue coffee.

Warung Kopi Culture

A warung is a small, family-run eatery or stall, and a warung kopi (often shortened to warkop) is one that focuses on coffee. These are casual, affordable places: a few tables or benches, simple snacks, and a steady stream of glasses of kopi tubruk. Most warungs that serve coffee offer it.

What makes the warung kopi special is the pace. Coffee is not grabbed to go. People sit, wait for the grounds to settle, talk, play cards or watch football, and sip slowly. In many ways it plays the same role as the café terrace in Paris or the kopitiam in Singapore. For a neighboring tradition, read our guide to ordering kopi at a Singapore kopitiam.

Common ways kopi tubruk is served

• Kopi hitam: black coffee, sweetened or not.
• With condensed milk: a modern, creamy variation.
• With ginger: some people add fresh ginger for a warming, spicy kick.

How to Make Kopi Tubruk at Home

This recipe makes one 8 oz (240 ml) glass. A heat-proof clear glass is traditional, but any mug works.

Ingredients

• 2 heaping tsp (about 10 g) finely ground dark roast coffee, a little coarser than espresso
• 1–2 tsp (4–8 g) sugar, or to taste
• 6–7 oz (180–200 ml) water, just off the boil, about 200–205°F (93–96°C)
• Optional: 1–2 tsp sweetened condensed milk, or a thin slice of fresh ginger

Steps

1. Warm your glass with a splash of hot water, then discard it.
2. Add the coffee and sugar to the glass (and the ginger slice, if using).
3. Pour the hot water in a steady stream directly onto the grounds.
4. Stir well for a few seconds. A crust of grounds will float at first.
5. Cover the glass with a saucer and wait 3–5 minutes. The grounds will sink.
6. Uncover and sip gently from the top. Stop before you reach the sludge at the bottom.

Tips for a better kopi tubruk

• Get the grind right. Too coarse and the coffee tastes weak and the grounds float; too fine and it turns muddy. Our grind size chart can help.
• Do not stir after settling. Once the grounds sink, leave them alone.
• Use bold beans. Kopi tubruk traditionally uses strong, dark coffee, often with Robusta in the mix. A full-bodied Indonesian coffee shines here.
• A gentle tap helps. Tapping the side of the glass encourages stubborn floating grounds to sink.

Variations

• Kopi susu style: Stir 1–2 tsp sweetened condensed milk into the bottom of the glass before adding the coffee.
• Ginger kopi tubruk: Add a few thin slices of fresh ginger with the grounds.
• Less sweet: Skip the sugar and use a smooth, chocolatey coffee.
• Extra strength: Use a Robusta or high-caffeine blend, but mind your total caffeine: the FDA cites up to 400 mg a day as generally safe for most healthy adults, and anyone pregnant, with a medical condition or taking medication should ask their doctor.

Kopi Tubruk FAQ

What does kopi tubruk mean?

Kopi means coffee in Indonesian, and tubruk is a Javanese word for collision. The name refers to hot water poured straight onto the coffee grounds.

Do you drink the grounds in kopi tubruk?

No. You let the grounds settle for a few minutes and sip the coffee above them. Leave the last bit in the glass.

What coffee is best for kopi tubruk?

Strong, dark roasted coffee works best, and Indonesian beans or blends with Robusta are traditional. Grind it fine, but not as powdery as Turkish coffee.

Is kopi tubruk the same as Turkish coffee?

They are related but different. Turkish coffee is simmered in a small pot, while kopi tubruk is made by pouring hot water over the grounds right in the glass.

Conclusion

Kopi tubruk proves that great coffee does not need gadgets: a glass, hot water and good beans are enough, plus a few minutes of patience. For an authentic Indonesian flavor, brew it with our Robusta from West Java, earthy Sumatra or Bali Blue. Every Feel Espresso coffee is roasted 1–5 days before delivery, so your glass of kopi tubruk starts with beans at their freshest.