Thai tea and masala chai are both sweet, milky black-tea drinks, but they are not the same drink: Thai tea (cha yen) is strong Ceylon-style black tea, sweetened with sugar and condensed milk and poured cold over ice, while masala chai is Assam black tea simmered in milk and water with fresh spices and served hot. Thai tea takes its flavor from sugar, condensed milk and a light background of vanilla, star anise and tamarind; chai takes its flavor from cardamom, ginger, cinnamon, clove and black pepper cooked in the pot.
Both start from bold black tea with milk and sugar, which is why they get confused. Spice, method, temperature and color are where they part.
Thai Tea vs Chai: Side-by-Side Comparison
| Thai tea (cha yen) | Masala chai | |
|---|---|---|
| Origin | Thailand | India |
| Tea base | Ceylon-style black tea, or a Thai Assam landrace called bai miang | CTC Assam black tea (also Darjeeling, Nilgiri) |
| Spices | Often none in Thailand; commercial mixes add vanilla, star anise, tamarind, sometimes cardamom or clove | Always spiced: cardamom, ginger, cinnamon, clove, black pepper |
| How it is brewed | Steeped strong in water, strained, then cooled | Simmered in a pan with milk and water, often boiled up more than once |
| Milk | Sweetened condensed milk stirred in; evaporated milk or cream on top | Whole milk cooked with the tea, commonly 1 part milk to 2 parts water |
| Sweetener | Sugar in the brew plus sweetened condensed milk | Sugar, jaggery or honey, roughly a teaspoon per cup |
| Color | Bright orange from added food coloring in commercial mixes; creamsicle-pale with milk | Tan to caramel brown, from tea and milk alone |
| How it is served | Cold, over ice, in a tall 12–20 fl oz glass | Hot, in a small cup of about 5–8 fl oz |
| Taste | Sweet, creamy, malty; vanilla and a faint licorice note | Spicy-sweet and peppery, cardamom forward, more tea tannin |
| Caffeine | 30–70 mg per 8 fl oz home-brewed; 60–130 mg per 16 fl oz cafe glass | Roughly 20–70 mg per 8 fl oz |
Is Thai tea a type of chai?
No. "Chai" is simply the word for tea in Hindi, and masala chai means spiced tea: an Indian preparation in which black tea is boiled with milk, sugar and crushed spices. Thai tea is a separate Thai drink with its own method — brew strong, sweeten, chill, pour over ice, finish with milk. In Thailand cha yen is usually just strong tea, sugar and milk; the chai-like spices come mostly from export mixes.
Does Thai tea taste like chai?
Not really. Thai tea reads as a dessert drink: sweet, thick, cold and creamy, vanilla and malt in front, only a faint aromatic edge behind. Masala chai reads as a tea drink with spices on top — hotter, thinner, much less sweet, cardamom and ginger sharp on the finish, with a black-pepper bite Thai tea never has. In chai you taste the tea first; in Thai tea, the milk and sugar.
Which has more caffeine, Thai tea or chai?
As served, Thai tea usually delivers more — but not because the leaf is stronger. A home-brewed 8 fl oz cup of Thai black tea carries about 30–70 mg, and published estimates for an 8 fl oz cup of masala chai run from roughly 20 to 70 mg, so the two overlap almost entirely. Plain brewed black tea averages about 47 mg per 8 fl oz in USDA reference data, and both drinks start there.
The gap opens at the counter: a cafe Thai iced tea is brewed double-strength and served in a 16 or 20 fl oz glass, roughly 60–130 mg, while chai comes in a small cup whose pot is partly milk and spice. Longer simmering pushes chai up; more milk pulls it down. Per-cup numbers are in our Thai tea caffeine guide.
Which is sweeter, Thai tea or chai?
Thai tea, by a wide margin. Sweetened condensed milk is close to half sugar by weight, so it sweetens and thickens at once — and most recipes sweeten the tea base too, before the milk goes in. A 16 fl oz cafe serving lands at roughly 250–400 calories. Chai is sweetened by the spoonful, and is often made with none.
Can you use chai spices in Thai tea, or make one from the other?
You can, and plenty of home recipes do — but the result is a third drink rather than a copy of either. Simmer cardamom, cinnamon and clove into a Thai tea base and you get a cold, sweet, spiced milk tea: pleasant, not cha yen. Chill chai and load it with condensed milk and you get closer, except for the color. Thai tea's orange comes from a food dye in commercial mixes, typically Sunset Yellow FCF (FD&C Yellow No. 6), so chai stays brown and plain black leaf brews amber.
Leaf and strength matter most. Thai tea wants a bold, malty black leaf brewed roughly double-strength — our Assam Thai tea leaves are a traditional base — while chai wants a fast-extracting CTC granule that holds up to milk in the pan. The method is in our Thai iced tea recipe.
If you want the flavor without the caffeine
Both drinks are black tea, so neither is caffeine-free. Thailand's other tradition is the alternative: infusions of lemongrass, butterfly pea flower, bael fruit (matoom), roselle and chrysanthemum contain no tea leaf, and therefore 0 mg of caffeine. They are neither chai nor cha yen — the flavors run citrusy and floral rather than malty — but they brew, and take milk and ice, the same way. Our 15-botanical Thai infusion blends several into one caffeine-free brew.
Frequently Asked Questions
Is Thai tea the same as chai tea?
No. Both are black tea with milk and sugar, but masala chai is an Indian drink simmered hot with cardamom, ginger, cinnamon, clove and pepper, while Thai tea is brewed strong, sweetened with condensed milk and served cold over ice. Thai tea is orange from added coloring; chai is brown.
Does Thai tea taste like chai?
Not closely. Thai tea tastes sweet, cold and creamy, with vanilla and malt in front and at most a faint licorice note from star anise. Masala chai tastes hot, spicier and far less sweet, with cardamom and ginger on the finish and a peppery bite.
Which has more caffeine, Thai tea or chai?
As served, Thai tea usually does. A home-brewed 8 fl oz cup of Thai black tea has about 30–70 mg of caffeine and an 8 fl oz cup of masala chai roughly 20–70 mg, so per cup they overlap. A cafe Thai iced tea, brewed double-strength in a 16 fl oz glass, runs 60–130 mg.
Is Thai tea sweeter than chai?
Yes, by a wide margin. Thai tea is sweetened twice: sugar in the tea base, then condensed milk, which is close to half sugar by weight. A 16 fl oz cafe serving runs about 250–400 calories. Masala chai takes roughly a teaspoon of sugar per cup, and is often made with none.
Can you make Thai tea with chai tea bags?
You can brew a spiced iced milk tea that way, but it will not taste like Thai tea. Chai blends lead with cardamom, ginger and pepper; Thai tea leads with malt, vanilla and condensed milk. It will also stay brown, since the orange comes from coloring in commercial Thai tea mixes.
Is there a caffeine-free version of Thai tea or chai?
Not in the traditional recipes, since both are made from black tea leaf. The caffeine-free alternative from Thailand is a botanical infusion of lemongrass, butterfly pea flower, bael fruit or roselle: no tea leaf, so 0 mg of caffeine. It is a different flavor family, more citrus and flower than malt.
This article covers ingredients, preparation and culinary information only. Caffeine and calorie figures are typical ranges; products and recipes vary.
For another side-by-side, see Thai tea vs matcha. Or browse the full range of loose-leaf Thai tea blends and botanical infusions.
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