Thai iced tea is a sweet, creamy, and strongly brewed black tea drink served over ice. It gets its signature orange color from a blend of black tea and spices, and it is traditionally finished with a layer of sweetened condensed milk. The drink is a popular street food staple in Thailand and has become a favorite in restaurants worldwide.
What Is Thai Iced Tea Made Of?
At its core, Thai iced tea starts with strongly brewed black tea. The tea is often a specific blend called Thai tea mix, which usually contains Ceylon tea along with spices like star anise, crushed tamarind, and sometimes cardamom. This blend gives the drink its distinctive flavor that is different from ordinary iced tea.
The color is the most recognizable feature. The bright orange hue comes from food coloring added to commercial Thai tea mixes. Some traditional recipes achieve a reddish-amber color naturally from the tea and spices, but the vivid orange seen in most restaurants comes from added coloring. If you brew it at home with plain black tea, you will not get that bright orange color.
Sweetness is essential. Thai iced tea is heavily sweetened, usually with sugar added to the hot tea before it is poured over ice. The creamy top layer comes from sweetened condensed milk, which is poured over the top of the tea rather than stirred in completely. This creates the signature two-tone look.
How Is Thai Iced Tea Traditionally Prepared?
The traditional method starts with a metal pot called a saitoh. Loose-leaf tea is placed inside a cloth bag, and boiling water is poured over it repeatedly to create a very strong concentrate. The tea is brewed much stronger than regular iced tea because it will be diluted by ice.
After brewing, sugar is stirred into the hot tea while it is still warm. This ensures the sugar dissolves completely. The sweetened tea is then poured into a glass filled with ice. Finally, sweetened condensed milk is poured over the top. The drink is served immediately, and the condensed milk slowly sinks and swirls through the tea.
In Thailand, the drink is often served in a plastic bag with a straw, tied at the top. It is a common sight at street markets and food stalls. The condensed milk layer is not stirred in before serving — the drinker mixes it themselves.
What Are the Main Ingredients in Thai Tea Mix?
Commercial Thai tea mixes vary by brand, but most share a common base. The primary ingredient is black tea, typically Ceylon tea from Sri Lanka. The spice blend is what sets Thai tea apart from other black teas.
- Star anise — adds a licorice-like sweetness
- Crushed tamarind — provides a subtle tangy note
- Cardamom — contributes a warm, aromatic flavor
- Food coloring — creates the bright orange appearance
Some blends also include vanilla or other flavorings. The exact recipe is proprietary to each brand, so flavors can differ noticeably. If you buy Thai tea mix, check the ingredient list for added coloring and flavorings.
For a homemade version without the mix, you can brew strong black tea and add star anise and tamarind during steeping. The flavor will be closer to traditional Thai tea, though the color will be less vivid.
What Type of Milk Is Used in Thai Iced Tea?
Sweetened condensed milk is the classic choice. It adds sweetness and a thick, rich texture that heavy cream alone cannot match. The caramelized flavor of condensed milk is a defining characteristic of the drink.
Some vendors use evaporated milk instead. Evaporated milk is less sweet and thinner than condensed milk. When evaporated milk is used, the tea itself is sweetened more heavily to compensate. This variation is common in Thailand, where some drinkers prefer a lighter finish.
In the United States, many Thai restaurants use half-and-half or a mixture of condensed milk and regular milk. This produces a lighter drink that is still creamy. Coconut milk is sometimes used as a dairy-free alternative, though it changes the flavor profile significantly.
If you are lactose intolerant, the drink as traditionally prepared is not suitable. The condensed milk and evaporated milk are both dairy products. Some shops offer versions with non-dairy creamers, but these are not traditional.
Is Thai Iced Tea High in Sugar and Calories?
Yes. Thai iced tea is a sweet dessert-like beverage, not a low-calorie drink. A typical 16-ounce serving contains a significant amount of sugar from three sources: the sugar added to the tea, the sweetened condensed milk, and the natural sugars in the milk itself.
The exact numbers vary widely by recipe and portion size. A restaurant serving can easily contain 30 to 40 grams of sugar or more. For reference, the American Heart Association recommends no more than 36 grams of added sugar per day for men and 25 grams for women. A single Thai iced tea can approach or exceed those limits.
The calorie count is similarly high. A typical serving ranges from 200 to 300 calories, mostly from sugar and the fat in the condensed milk. It is best treated as an occasional treat rather than a daily beverage.
If you want to reduce the sugar, you can ask for less condensed milk or request the tea be sweetened less. Some shops will accommodate this request. You can also make it at home and control the amounts yourself.
Does Thai Iced Tea Contain Caffeine?
Yes. Because it is made from black tea, Thai iced tea contains caffeine. Black tea typically contains about 40 to 70 milligrams of caffeine per 8-ounce cup, depending on the brew strength and steeping time.
Thai tea is brewed very strong, so the caffeine content can be on the higher end of that range. A large serving could contain as much caffeine as a cup of coffee. If you are sensitive to caffeine, this is worth considering, especially if you drink it in the afternoon or evening.
There is no caffeine-free version of traditional Thai iced tea. Herbal teas can mimic the spices, but they will not have the same flavor or body. If you are avoiding caffeine, this drink is not a good choice.
How Does Thai Iced Tea Compare to Other Iced Teas?
Thai iced tea stands apart from regular iced tea in several ways. Standard iced tea is lightly sweetened or unsweetened, brewed at moderate strength, and served with lemon or simple syrup. Thai iced tea is heavily sweetened, brewed very strong, and finished with creamy condensed milk.
The spice blend is another major difference. Most iced teas have no added spices. Thai tea’s star anise and tamarind give it a complex flavor that is neither purely tea nor purely sweet. This is why it pairs well with spicy Thai food — the sweetness and creaminess balance the heat.
Thai iced tea is also more similar to Indian masala chai in its use of spiced black tea, but the preparation differs. Chai is typically served hot with milk simmered into the tea. Thai iced tea is served cold, and the milk is poured over the top rather than brewed in.
Can You Make Thai Iced Tea at Home?
Yes, and it is straightforward. You need four things: strong black tea, sugar, sweetened condensed milk, and ice. Thai tea mix is widely available at Asian grocery stores and online. If you cannot find it, a strong Ceylon or Assam black tea will work.
Brew the tea double-strength. Use twice as much tea as you normally would for the same amount of water. Steep for 5 minutes. Stir in sugar while the tea is hot. Fill a glass with ice, pour the tea over it, and top with condensed milk.
The homemade version will be less vibrant in color unless you use a commercial mix. The flavor will still be close, especially if you add star anise and a small piece of tamarind to the steeping tea. Taste as you go and adjust the sweetness to your preference.
Frequently Asked Questions
Is Thai iced tea the same as Thai milk tea?
Yes, the terms are used interchangeably. Both refer to the same drink of spiced black tea, sugar, and condensed milk served over ice.
Why is Thai iced tea bright orange?
The orange color comes from food coloring added to commercial Thai tea mixes. Traditional brews without added coloring are a reddish-amber color from the tea and spices.
Can I make Thai iced tea without condensed milk?
Yes, but it will not taste the same. You can use evaporated milk, half-and-half, or coconut milk, but you will need to add extra sugar to compensate for the lost sweetness.
Does Thai iced tea have more caffeine than coffee?
No. A typical serving has less caffeine than a standard cup of coffee, though it can be similar to a small coffee depending on brew strength and serving size.
