Costa Sweet Ube Iced Matcha (UK Price & Calories 2026)
Costa Sweet Ube Iced Matcha is a cold milk-based matcha drink with sweet ube flavour and earthy green tea notes. In the UK, it costs £5.60 for a Small and £5.95 for a Medium, with the Medium serving listed at 376 ml and 166 kcal. It uses semi-skimmed milk by default, is suitable for vegetarians, but it is not vegan and contains milk.
Source: Official Costa Database
| Nutrient | Per 100g (In) | Eat In (376ml) | Takeaway (486ml) |
|---|---|---|---|
| Energy (kcal) | 44 | 166 | 166 |
| Energy (kJ) | 187 | 703 | 703 |
| Carbs (g) | 6.7 | 25 | 25 |
| Sugars (g) | 6.1 | 23 | 23 |
| Fat (g) | 1.1 | 4 | 4 |
| Saturates (g) | 0.7 | 2.5 | 2.5 |
| Protein (g) | 2.3 | 8.8 | 8.8 |
| Salt (g) | 0.1 | 0.37 | 0.37 |
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Quick answer before you order
- Sweet Ube Iced Matcha costs £5.60 in Small and £5.95 in Medium.
- The Medium costs 35p more than the Small.
- Small is 352 ml and has 120 kcal.
- Medium is 486 ml and has 166 kcal.
- The Medium adds 134 ml, 46 kcal and 6 g sugar compared with Small.
- The default setup is Medium, semi-skimmed milk and takeaway.
Is it worth the price?
On price alone, Medium looks stronger. You pay £5.95 instead of £5.60, so the extra 35p gets you 134 ml more drink. That’s a clear jump in portion for a small jump in price.
That doesn’t automatically mean everyone should order Medium. The bigger size also takes the drink from 120 kcal to 166 kcal, and sugar rises from 17 g to 23 g. If you mainly want a quick sweet iced drink, Small does the job with less sugar and fewer calories. If you’re going to sit with it or want it to last through a longer stop, Medium makes more sense.
Which size makes the most sense?
Small is the cleaner pick if you’re ordering this as a sweet side drink rather than the main event. It’s 352 ml, costs £5.60 and has 120 kcal. That’s the size I’d point you towards if you like the idea of the ube and matcha mix but don’t want a larger sweet drink.
Medium is the better value if you actually want the extra drink. It’s 486 ml, costs £5.95 and has 166 kcal. The 35p difference is small enough that it’s easy to justify, but the sugar and portion both step up too.
I’d be most likely to weigh this up at a Costa inside a retail park before a cinema visit with my son, especially on a day when a normal coffee felt too plain. In that situation, I’d think twice about the bigger size unless I really wanted the extra portion.
Sweet Ube Iced Matcha calories and nutrition
Sweet Ube Iced Matcha has 120 kcal in Small and 166 kcal in Medium. The Medium also has 23 g sugar, 4 g fat, 8.8 g protein and 0.37 g salt in the default semi-skimmed milk setup.
The numbers to watch are sugar and portion size. This is a sweet or dessert-style drink, so it’s not the same kind of order as a plain iced tea. Small keeps it more controlled; Medium gives better value but moves everything up.
| Size | Portion (ml) | Energy (kcal) | Energy (kJ) | Sugar (g) | Fat (g) | Saturates (g) | Carbs (g) | Protein (g) | Salt (g) |
| Small | 352 | 120 | 509 | 17 | 2.9 | 1.8 | 18 | 6.3 | 0.27 |
| Medium | 486 | 166 | 703 | 23 | 4 | 2.5 | 25 | 8.8 | 0.37 |
Source: Official Costa Database
Milk swaps: what actually changes?
The default nutrition above is based on a Medium with semi-skimmed milk. Costa lists oat, coconut and soya milk as £0.00 changes for this drink, and each one changes the Medium nutrition compared with the default.
Coconut milk
Coconut is the lowest-calorie milk swap listed for the default Medium. Compared with semi-skimmed, it changes the drink by -32 kcal, -136 kJ, -3 g sugar, -0.7 g fat, -0.9 g saturates, -3 g carbs, -4.6 g protein and -0.03 g salt. That puts the Medium at 134 kcal if you choose coconut milk.
Soya milk
Soya also lowers the calories compared with the default Medium, but by less than coconut. It changes the drink by -9 kcal, -42 kJ, -5 g sugar, +0.5 g fat, -1.8 g saturates, -4 g carbs, -0.5 g protein and -0.03 g salt. That makes the Medium 157 kcal with soya milk.
Oat milk
Oat milk takes the Medium in the other direction for calories. Compared with semi-skimmed, it changes the drink by +30 kcal, +121 kJ, -3 g sugar, +3 g fat, -1.8 g saturates, +5 g carbs, -6.2 g protein and +0.04 g salt. That makes the Medium 196 kcal with oat milk.
If your priority is the lowest calorie number among the listed milk swaps for the default Medium, coconut is the one. If you’re choosing based on taste preference, the price is the same across oat, coconut and soya in the data provided.
Allergens to know
The listed allergen information for Sweet Ube Iced Matcha is:
- Small: Milk — Contains
- Medium: Milk — Contains
Allergen information can change — always check in-store before ordering if you have a food allergy.
What I’d actually choose
I’d order the Small if I wanted the ube and matcha flavour without turning it into a bigger sweet drink. At £5.60 and 120 kcal, it’s the more sensible choice if you’re just after something cold and different.
I’d choose Medium if I knew I wanted a drink to last longer. The extra 35p is good value for the added 134 ml, but I wouldn’t choose it automatically because sugar rises from 17 g to 23 g. For milk, I’d look at coconut if calories were the main deciding point, because it lowers the default Medium by 32 kcal. Order this if you want a sweeter iced matcha rather than a plain tea or coffee. Skip it if you’re after the simplest, least sweet cold drink on the board.
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Disclaimer
Prices shown are typical UK menu estimates for 2026 and may vary by store location, promotions, delivery services, or eat-in vs takeaway pricing. Nutritional values are based on standard drink configurations and may change depending on size, milk choice, extras, or recipe updates made by the brand.