Here is how to make cucumber iced tea: brew a light green tea (or a caffeine-free base), let it cool, infuse it with thinly sliced fresh cucumber and a few mint leaves in the refrigerator, sweeten it very lightly, then pour it over plenty of ice. The result is a clean, gently vegetal, super-refreshing glass that tastes like the crispest spa water you have ever had, and cucumber with mint is one of the great cooling summer combinations.
Cucumber is a mild, watery fruit used the world over in cooling drinks, from chilled soups to infused waters, and it slips into iced tea beautifully. The catch is that cucumber flavour is delicate, so the whole method is built around protecting it. Below you will find both a hot-brew-then-chill version and a fridge cold-brew version, exact amounts, a quick flavour table, and the food-safety basics.
What cucumber iced tea is
Cucumber iced tea is simply brewed tea that has been infused with fresh cucumber and chilled over ice. It is not a boiled cucumber decoction, and it is not a hot cucumber tea, so you never cook the cucumber at all. Instead you steep a light tea, cool it, and let cold cucumber slices lend the drink their fresh, faintly green, watermelon-rind cleanness over an hour or two in the fridge.
The flavour is crisp and softly vegetal rather than sweet or fruity. On its own, cucumber reads cool and calming; add mint and it turns brighter and more lifted, which is why cucumber-mint iced tea is such a classic warm-weather pour. A squeeze of lime sharpens the whole thing and keeps it from tasting flat.
Because cucumber is so mild, the base matters. A light green tea, or a caffeine-free herbal base, lets the cucumber show, while a strong, tannic black tea can bury it. If you want to understand the plain green base on its own, see our guide to making green tea, and for the general chilled-tea method see how to make iced tea.
How to make cucumber iced tea: the key technique
The single most important idea in how to make cucumber iced tea is this: cucumber flavour is delicate and easily lost, so slice it thin, add it to already-brewed tea, and give it time in the cold. Three rules follow from that:
- Brew gently. Steep green tea in cooler water (around 75-80 C / 170-175 F) for 2-3 minutes so it does not turn bitter. A harsh, over-steeped base fights the cucumber.
- Never boil the cucumber. Heat cooks out its fresh character, so infuse the slices into cooled tea, never hot tea.
- Slice thin and wait. Thin slices (or a peeled ribbon or two) give up their flavour faster, and an hour or two in the fridge does far more than a quick stir ever will.
Ingredients for a cucumber iced tea recipe
This makes about 4 cups (roughly 1 litre), enough for a small pitcher.
- 4 cups (about 1 litre) fresh water
- 4-5 green tea bags, or about 4 teaspoons loose green tea, or a caffeine-free base (see the caffeine note below)
- About half an English (seedless) cucumber, washed and sliced thin
- A few fresh mint leaves (optional, but classic)
- A squeeze of lime
- Sugar, simple syrup or honey to taste, since a little goes a long way
- Plenty of ice, to serve
An English cucumber is ideal because it has thin skin and few seeds. If you use a standard cucumber, peel it and scrape out the seeds so the drink stays clean and does not turn bitter.
Method 1: hot-brew, then chill
This is the faster route, good when you want a pitcher the same afternoon.
- Heat the water to around 75-80 C / 170-175 F (bring it just under a boil, then let it sit a minute). Pour it over the green tea and steep 2-3 minutes, no longer, or it will turn bitter.
- Remove the tea bags or strain out the leaves. Let the tea cool to at least room temperature; you can speed this up by setting the jug in a bowl of cold water.
- Once the tea is cool, add the thin cucumber slices and mint leaves. Adding them to hot tea would cook out the fresh flavour.
- Cover and refrigerate 1-2 hours to infuse. Taste after an hour, as the cucumber comes through gently.
- Strain out the cucumber and mint. Stir in a squeeze of lime and sweeten lightly to taste.
- Pour over ice and serve cold.
Method 2: fridge cold-brew
Cold-brewing is the most hands-off way and gives an especially smooth, mellow glass, because cold water pulls fewer harsh tannins (and a little less caffeine). It is the same idea as our cold-brew tea method, with cucumber added.
- Put the green tea, cucumber slices and mint straight into a jug of cold, fresh water.
- Cover and refrigerate 6-8 hours, or overnight.
- Strain out the tea, cucumber and mint.
- Add a squeeze of lime, sweeten lightly if you like, and serve over ice.
Whichever route you take, the golden food-safety rule is the same: hot-brew then chill, or cold-brew in the refrigerator, and never leave tea to steep warm at room temperature for hours. Warm water sitting out is exactly where unwanted bacteria can grow, so keep the infusing tea in the fridge.
Cucumber-only vs cucumber-mint
Both are lovely; it comes down to how bright you want the glass.
| Style | Flavour | Best for |
|---|---|---|
| Cucumber only | Clean, soft, gently vegetal and calming, the most spa-water-like | A quiet, cooling everyday glass |
| Cucumber & mint | Crisp and cucumber-forward but lifted, brighter and more aromatic | Hot afternoons, entertaining, a livelier pour |
If mint is your favourite part, you can lean into it. Our guide to making peppermint tea covers getting the most from fresh and dried mint.
Storage and make-ahead
Cucumber iced tea is best fresh. Because fresh cucumber fades and softens, drink it within about 1-2 days, which is sooner than most iced teas. Keep it covered in the fridge, and for a make-ahead pitcher, strain out the cucumber and mint after infusing rather than letting them sit for days, since they can turn the tea murky and vegetal. For the crispest result, infuse a fresh batch each day.
Serving ideas
- Fill the glass with ice first, then pour, so the tea stays cold without over-diluting.
- Drop in a couple of fresh cucumber ribbons (run a peeler down the cucumber) and a mint sprig for looks.
- Balance a thin wheel of lime on the rim to brighten each sip.
- For a party pitcher, add cucumber ribbons and mint just before serving so they look fresh.
A light note on caffeine and food safety
Be honest about caffeine: an iced tea built on green tea (or on black or jasmine green) contains caffeine. If you want a caffeine-free glass, build it on a herb or flower base with no real tea, so a cucumber-and-mint infusion made without any green tea, for example, is naturally caffeine-free. Cold-brewing tends to pull a little less caffeine than hot-brewing, but a green base is never caffeine-free.
For food safety, keep it simple: wash the cucumber before slicing; hot-brew then chill, or cold-brew in the fridge, never warm on the counter for hours; keep the finished tea covered and refrigerated; and enjoy it within a day or two. Never give honey to infants under 12 months. Cucumber and mint are food, not medicine, so keep any talk of them being cooling or refreshing to how the glass tastes and feels. Responses vary, and this is not medical advice.