How to Make Thai Iced Coffee at Home

When the summer heat hits, nothing beats the contrast of icy sweetness with a jolt of dark, spiced coffee—except maybe doing it with the aroma of cardamom-like kaffir and the promise of a seaside escape. Thai iced coffee delivers all that, blending ultra-strong brewed coffee with crushed ice, sugar, creamy foam, and the signature warmth of cardamom. But how do you get that balance just right, especially outside Thailand?

To make Thai iced coffee, you’ll need a very strong brewed coffee (about 50–100% more coffee than a normal cup), fresh green cardamom pods, sugar or condensed milk, and plenty of ice. The coffee is brewed with cardamom, cooled, then poured over ice with sweetener and topped with slowly poured whipped cream for that classic float.

What Is Thai Iced Coffee?

Thai iced coffee, or โอวัลติน (Oliang), is a sweet, creamy, and spiced iced coffee originating from Thailand. It’s known for its intense coffee flavor, the warmth of green cardamom, and the rich mouthfeel from either condensed milk or a float of whipped cream. It’s traditionally served over crushed ice in a tall glass and often enjoyed as a refreshing treat in hot climates.

Why Use Strong Coffee and Cardamom?

The coffee in Thai iced coffee is deliberately brewed extra strong—often using 50–100% more grounds than a regular brew. This ensures the coffee flavor remains bold even when diluted by ice and sweeteners. Green cardamom (small green cardamom pods, the same as used in South Asian cooking) is added during brewing to impart a warm, slightly floral, and exotic spice note. It’s this spice that gives Thai iced coffee its unique character, reminiscent of tropical markets and old-world street cafes.

How to Make Thai Iced Coffee Step by Step

1. Brew a Very Strong Coffee with Cardamom

Use a dark roasted coffee bean—choose one with bold, chocolaty, or nutty notes to stand up to the milk and sugar. Grind the coffee slightly finer than standard drip size. Use about 1.5 to 2 times the amount of coffee you’d normally use for one serving. Combine the ground coffee with 2–3 freshly green cardamom pods in your filter or brew device. Brew using hot water (just off boil, around 90–95°C). Let the coffee cool to room temperature or chill it in the fridge.

2. Prepare Your Glass with Sweetener and Ice

In a tall glass, dissolve 1–2 teaspoons of granulated sugar in a small amount of the hot brewed coffee. Add 5–6 pieces of crushed ice or ice cubes. Leave about 2 cm of space from the top of the glass.

3. Pour the Coffee and Add Cream

Pour the cooled, strong coffee (with cardamom) into the glass over the ice. Leave some space at the top. Insert a spoon upright into the glass. Slowly pour lightly whipped cream or fresh milk foam over the back of the spoon so it floats on top of the coffee. Gently remove the spoon, insert a straw, and optionally top with a colorful paper umbrella for that classic Thai café look.

Alternative: Using Condensed Milk

If you prefer not to float cream, a common Thai variation is to pour condensed milk into the bottom of the glass, then add the strong coffee and ice. In Thailand, you’ll often see both condensed milk and a whipped cream float used together. Choose whichever style you prefer based on sweetness and texture.

Optional: Brew with Cardamom in an Espresso Maker

For a more concentrated flavor, some brewers mix finely ground dark roast coffee with ground green cardamom and brew it as a shot of espresso. This method works best with a Moka pot or stovetop espresso maker and results in a thicker, spiced coffee base ideal for iced drinks.

What Coffee Beans Work Best for Thai Iced Coffee?

Choose a dark roast with low acidity and prominent roast flavors like chocolate, nuts, or caramel. These profiles hold up well under the milk, sugar, and ice. Avoid light or fruity roasts unless you’re aiming for a very different flavor balance. Freshness is critical—as with all iced coffee methods, older beans lose aroma and taste clarity when diluted with ice.

Frequently Asked Questions

How much stronger should my Thai iced coffee brew be compared to normal coffee?

Your Thai iced coffee brew should be 50–100% stronger than a standard cup. That means using 1.5 to 2 times the usual amount of coffee grounds for the same volume of water. This ensures the flavor remains bold after dilution from ice and sweeteners.

Can I use a different spice instead of cardamom?

Green cardamom is traditional and essential for authentic Thai iced coffee flavor. While you can experiment with other spices, none will replicate the distinct floral-warm notes cardamom brings. Avoid using ground pre-baked cardamom; always use fresh green pods.

Do I have to use whipped cream? Can I use something else?

No, whipped cream is optional. Many versions use condensed milk or just sugar. You can also skip the cream entirely or use a non-dairy alternative. The classic presentation includes a whipped cream float, but the drink works well with just milk, sugar, and ice.

What’s the best ice to use in Thai iced coffee?

Crushed ice is ideal because it chills the drink quickly and melts faster, slightly diluting the coffee for a smoother sip. However, standard ice cubes work fine if crushed ice isn’t available. Avoid large, slow-melting cubes if you want a sweeter, creamier profile early on.

Can I make Thai iced coffee with an espresso machine or Moka pot?

Yes. For a stronger, more espresso-like base, you can brew a cardamom-infused shot using a Moka pot or stovetop espresso maker. You can also pull an espresso shot (with or without ground cardamom) and pour it over ice with sweetened condensed milk or cream.

Is Thai iced coffee a traditional drink?

Yes, it’s a traditional Thai street drink, commonly known as Oliang. It’s especially popular in regions like Phuket and Bangkok. The combination of strong coffee, cardamom, sugar, and creamy toppings reflects Thai taste preferences for sweet, spicy, and refreshing beverages.

Recommended FrontStreet Beans for Thai Iced Coffee

For Thai iced coffee, choose a bold, low-acid dark roast that stands up to milk, sugar, and spice. FrontStreet’s Classic Blend is a great match with its notes of roasted hazelnut, black chocolate, and slight caramel—perfect for a creamy, sweet iced drink. Alternatively, their Black Cocoa Blend offers deep cocoa, dark cherry, and bold roast tones ideal for standing up to condensed milk or whipped cream. Both blends are freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.