HEYTEA Grapefruit Boom
The driest, sharpest cup HEYTEA sells. No mango softening it and no cap smoothing it over, which is exactly why its regulars keep ordering it.
- Fruit Tea Series
- No dairy in base
About the Grapefruit Boom
Grapefruit Boom costs $9.49 at 200 calories, with a large at $10.99 and 270 calories. Hand squeezed grapefruit goes into jasmine green tea with the pulp left in, and nothing is added to round it off. This is the most adult tasting drink here and the one least likely to appeal if you came for bubble tea in the usual sense.
Bitterness is a feature rather than a fault. Grapefruit carries most of its bitter compounds in the pith and membrane, and a drink that keeps the pulp keeps some of that. What you get has a proper edge, closer to a fresh citrus soda than a sweet fruit tea. The jasmine base is audible underneath, which is unusual in the fruit range, because no heavy sweetness is sitting on top of it.
Compared with Mango Grapefruit Boom at $9.99, this is the sharper of the two by a clear margin. That drink uses mango as a counterweight and the sweetness softens every sip. Take the mango out and the citrus has nothing to push against, which is the whole point. If you found the mango version nearly right but slightly too sweet, order this instead.
Watch the size step. The large runs $1.50 more for 70 extra calories, and grapefruit sharpens as it sits, since dilution affects the sugar faster than the citrus. Drink a large slowly and it finishes noticeably more bitter than it started. That is fine if you like the drink and unpleasant if you are on the fence.
Order this if you find most bubble tea sickly, if you like grapefruit juice, or if you want a low sweetness drink that still has real flavour. Skip it if bitterness is not something you enjoy, because sugar level cannot remove it. Cloud Mango sits at the opposite end of the same board, and Kale Boost Tea is the other low sweetness option without the citrus edge.
No dairy goes into the standard build, so this is one of the drier dairy free choices alongside Crisp Grape Boom. A grapefruit pulp topping at {PRICE:grapefruit-pulp} takes it further the same way, and coconut milk jelly softens it without you having to order something else.
Grapefruit Boom sizes and prices
Going large on the Grapefruit Boom adds $1.50 and 70 calories, which is one of only 4 size upgrades available across a 44 drink board, priced out per calorie below.
| Size | Price | Calories | Cal per dollar |
|---|---|---|---|
| Regular cup | $9.49 | 200 | 21 |
| Large cup | $10.99 | 270 | 25 |
| Difference | +$1.50 | +70 | n/a |
Listed US menu price before tax. The Grapefruit Boom is one of 13 drinks in the Fruit Tea Series section and city to city variation applies to all of them, cross checked across public US menu listings on 02 September 2026.
Best toppings for the Grapefruit Boom
The Grapefruit Boom starts at $9.49 and every topping is charged on top of that. Sago is the cheapest of the three at $0.98, and all three together would take the Grapefruit Boom to $13.63 and 390 calories.
| Topping | Add on | Cal | Cup total | Why it works here |
|---|---|---|---|---|
| Grapefruit Pulp | +$1.58 | +40 | $11.07 240 cal | More of what the drink already is, at 40 calories. The addition its regulars actually order. |
| Coconut Milk Jelly | +$1.58 | +70 | $11.07 270 cal | Softens the citrus without sweetening it much, and it is the standard fix for a cup that reads too sharp. |
| Sago | +$0.98 | +80 | $10.47 280 cal | Neutral chew that gives the drink some body at the bottom without touching the flavour balance. |
These three suit the Grapefruit Boom in particular, and the remaining 4 options sit in the full toppings table with what each one does to a mid board cup.
How to make a Grapefruit Boom at home
I find this one genuinely easy at home, and often better than the shop version, because you control how much pith goes in. That single variable is your difference between pleasantly sharp and unpleasantly harsh. In store it costs $9.49.
Ingredients
Jasmine tea base
Citrus layer
To serve
Method
All steps done. Your Grapefruit Boom is ready to pour.
Tips that actually change the result
- Pink grapefruit, not white. White grapefruit is markedly more bitter and the drink tips over.
- Keep the pith off. A little bitterness is the point and a lot of it is a mistake.
- Taste after the salt goes in, not before. The difference is larger than it sounds.
Ways to change it
- Add 1 cup mashed mango to build the Mango Grapefruit Boom version.
- Swap grapefruit for pomelo, which is sweeter and considerably gentler.
- Top with a spoon of honey rather than syrup for a rounder finish.
How the Grapefruit Boom compares
The low sweetness corner of the board. Grapefruit Boom is the sharpest of the four, and the only one where I would call bitterness the main event.
| Drink | Price | Calories | Base | Dairy |
|---|---|---|---|---|
| Grapefruit Boom (this drink) | $9.49 | 200 | Jasmine green tea | No |
| Mango Grapefruit Boom | $9.99 | 210 | Jasmine green tea | No |
| Kale Boost Tea | $9.99 | 180 | Jasmine green tea | No |
| Crisp Grape Boom | $9.49 | 210 | Jasmine green tea | No |
More from Fruit Tea Series
Crisp Grape Boom
Same price, 10 calories heavier, on the same base.
Cloud Crisp Grape
$0.50 more, 20 calories heavier, on the same base, and it has dairy.
Green Grape Boom
$0.50 more, same calories, on the same base.
Cloud Green Grape
Same price, 10 calories heavier, on the same base, and it has dairy.
Grapefruit Boom questions
How much is the HEYTEA Grapefruit Boom?
Expect $9.49 for the regular and $10.99 for the large. That places it in the middle of the fruit tea range on the US board.
How many calories are in a Grapefruit Boom?
A regular holds 200 calories and a large holds 270. It is one of the lower sugar fruit teas even at standard sweetness, since grapefruit brings acidity rather than sugar.
Is the Grapefruit Boom bitter?
Yes, and deliberately so. Real grapefruit with the pulp left in carries a genuine bitter edge. Anyone who wants that flavour softened should order Mango Grapefruit Boom, where mango balances it out.
Does the Grapefruit Boom have dairy?
No. The standard build is jasmine green tea, grapefruit and ice. A cheese cloud topping would add dairy, though it works against the character of this particular drink.
Is this a good option for cutting sugar?
It is one of the better ones. At 200 calories it sits below most of the board, and ordered at a reduced sugar level it goes lower still. Kale Boost Tea at 180 calories is the other low sweetness choice.
Popular HEYTEA drinks
Coconut Mango Boom
$0.50 less, same calories, with no tea base.
Coconut Mango Blue
$1.00 less, 10 calories lighter, with no tea base.
Cloud Mango
$0.50 more, same calories, on the same base, and it has dairy.
Mango Grapefruit Boom
$0.50 more, 10 calories heavier, on the same base.