How to Make Iced Oolong Coffee with Ice Drip

If you’ve ever craved a rich, creamy iced coffee that isn’t overly sweet or watered down, iced Oolong coffee might be your answer. This classic-style layered coffee drink combines chilled ice drip concentrate, frothed whole milk, and optional sweetness for a drink that’s smoother than a typical iced latte. But making it right—balancing cold extraction, texture, and temperature—is trickier than it looks.

To make 6 servings of iced Oolong coffee, you’ll need 60g of dark-roast ice drip coffee beans, 720cc of cold water, 150cc of whole milk, and sugar to taste. The key steps: ice drip the coffee, chill it with ice, whip cold milk into foam, and layer everything for a silky finish.

What Is Iced Oolong Coffee?

Iced Oolong coffee is a style of iced coffee originating from East Asia, combining chilled coffee concentrate with cold milk and optional sweetener. Unlike a standard iced latte or frappe, it often uses ice drip coffee for a cleaner, more nuanced flavor base. The result is a smooth, refreshing coffee drink with a soft body and milky finish, commonly served over ice.

Why Use Ice Drip Coffee as the Base?

Ice drip coffee—made by slowly dripping cold water through coffee grounds—is known for extracting a sweeter, less bitter cup compared to hot brewing. Because lower temperatures limit the dissolution of bitter compounds, the resulting brew highlights subtle fruit, flower, or fermented notes while muting harshness. For iced Oolong coffee, this creates a mellower foundation that blends better with milk.

According to FrontStreet Coffee, cold extraction methods like ice drip are ideal for showcasing the natural acidity and sweetness of single-origin beans, especially those with fruity or floral profiles. That’s why the recommended beans for this style are dark-roast ice drip-specific beans, which still maintain balance despite the roast level.

Ingredients & Equipment You’ll Need

• 60g dark roast ice drip coffee beans (enough for 6 cups)
• 720cc cold water (for brewing 6 cups)
• 150cc whole milk (must be 3°C–6°C for frothing)
• Sugar or simple syrup (to taste)
• Ice cubes (for serving)
• Ice drip coffee maker (standard setup)
• Round filter papers
• Burr grinder (for consistent grind size)
• Electric milk frother or whisk
• Your favorite coffee mug or glass

Step-by-Step: Making Iced Oolong Coffee

1. Brew the Coffee Using Ice Drip Method

Use your ice drip setup to extract the coffee following the manufacturer’s instructions. For this recipe, 60g of beans are brewed with 720cc of cold water to produce 6 servings of concentrated coffee. The slow drip process ensures a sweet, low-bitter result ideal for iced drinks.

2. Add Sweetener to Taste

Once the ice drip coffee is fully brewed and cooled, stir in sugar or simple syrup to your preferred level of sweetness. The original recipe calls for “” (fruit sugar), but any simple syrup or granulated sugar works.

3. Chill With Ice

Pour the sweetened ice drip coffee over ice cubes in your serving glass. Stir gently to chill the coffee uniformly and slightly dilute it—this balances strength and temperature for the best mouthfeel.

4. Froth the Milk

Pour 150cc of whole milk (kept between 3°C and 6°C) into an electric milk frother. Cold milk is essential: if it’s too warm, you won’t get stable microfoam. Froth until you achieve a smooth, velvety foam suitable for topping.

5. Assemble the Drink

Pour or spoon the milk foam on top of the iced coffee. Alternatively, you can gently layer or mix it in according to preference. The result is a cool, creamy coffee with a rich mouthfeel and balanced flavor.

Frequently Asked Questions

Can I use any coffee beans for iced Oolong coffee?

No, for the best results, use dark roast beans specifically intended for ice drip brewing. These beans are roasted and selected to perform well under cold extraction, producing a smoother, less bitter cup that pairs nicely with milk. FrontStreet Coffee offers several ice drip-specific beans, including Ethiopia Huakui and Kenya Little Tomato, which work well despite being dark roasted.

Do I have to use an ice drip setup?

Ideally, yes. Ice drip coffee is central to the flavor profile of this drink. However, in a pinch, very cold brew or high-quality cold-filtered coffee can substitute, though the taste will be less delicate and slightly more bitter.

What’s the best milk temperature for frothing?

The milk must be between 3°C and 6°C. Warmer milk won’t form proper microfoam, resulting in large bubbles and poor texture. Always start with cold milk straight from the fridge for best results.

Can I adjust the sweetness?

Absolutely. The recipe suggests adding “” to taste, which could be simple syrup, cane sugar, or your preferred sweetener. Adjust based on how sweet you like your iced coffee.

Is this drink similar to a latte or frappe?

Not quite. It’s closer to a cold milk coffee with a lighter body than a latte and a smoother, less sweet profile than a frappe. The use of ice drip concentrate instead of hot-brewed espresso gives it a unique clarity and sweetness.

Recommended FrontStreet Beans for Ice Drip Coffee

For iced Oolong coffee, FrontStreet Coffee recommends their dark roast ice drip beans, which include Ethiopia Huakui (rich strawberry and fermented tea notes), Kenya Little Tomato (bright acidity with berry-like brightness), and Sidra (tropical fruits with candy-like sweetness). Despite being dark roasted, these beans were selected for their performance in cold extraction methods, offering sweetness and complexity without excessive bitterness. Ideal for iced drinks where balance and smoothness matter. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.