When it's too hot to think, this is what I make. It tastes like a spa, and the cucumber actually does the work of hydrating you while you drink.
The hot-day drink that actually hydrates you
When it's too hot to think, this is what I make. It tastes like a spa, looks like a magazine cover, and the cucumber actually does the work of rehydrating you while you drink it — cucumbers are around 96% water and naturally rich in electrolytes like potassium.
Three ingredients, five minutes, no added sugar. It's the antithesis of a soda — bright, vegetal, and so refreshing you feel virtuous drinking it. And if you want a grown-up version, a splash of gin or a thin slice of jalapeño turns it into a garden-party staple.
- Just 5 minutes from start to glass
- No added sugar — naturally sweet from the cucumber
- Naturally vegan, gluten-free, and Whole30-friendly
- Easy to scale to a pitcher for entertaining
Ingredient notes
Choosing the right cucumber
English (hothouse) cucumbers are ideal — they have thin skin, fewer seeds, and a mild, sweet flavour. Persian cucumbers also work beautifully. Avoid waxy supermarket cucumbers if possible; they have a slightly bitter skin that comes through in the drink.
If you only have a standard slicing cucumber, peel it first and scrape out the seeds with a spoon before blending — they can taste bitter when blitzed.
Mint matters
Use spearmint — the standard supermarket mint variety — rather than peppermint, which can taste medicinal in cold drinks. The leaves should be vibrant green and fragrant; tired, blackened mint will make the drink taste flat. Don't bother stripping every leaf from the stem; tender stems blend in fine.
Always fresh lime
Bottled lime juice will absolutely ruin this drink — it tastes metallic and slightly chemical. You need the brightness of fresh-squeezed. Roll the limes firmly on the counter before juicing; you'll get nearly twice the yield.
Method: a 5-minute build
The technique is barely worth describing — but two small details make a big difference.
- Blend cucumber, mint, lime, and a splash of water until completely smooth
- Strain through a fine sieve, pressing firmly to extract every drop
- Pour over plenty of ice — the dilution from melting ice is part of the recipe
- Top with very cold sparkling water just before serving so it stays fizzy
- Garnish with extra mint and a cucumber ribbon for the spa-bar look
Variations to take it further
Once you've made the base, the possibilities are wide open:
- Add 1.5 oz gin or vodka per glass for a low-sugar cocktail
- Blend in a few slices of jalapeño for a spicy garden-party version
- Swap lime for grapefruit juice for a more bitter, sophisticated profile
- Add a teaspoon of matcha for a green, energising twist
- Make a pitcher with our {{LINK:0}} for a stunning summer drinks spread
Make-ahead and batch tips
The cucumber-mint-lime base keeps in the fridge for 24 hours in a sealed jar. Beyond that the mint starts to oxidise and the colour goes muddy. For a party, blend the base in advance and only add the sparkling water at serving time — flat fizzy water is a sad thing.
For a pitcher, multiply by 4: one large pitcher serves 8 generously.
Why this beats a soda every time
The average sweetened soda has 39g of added sugar per can — about 10 teaspoons. This drink has effectively zero added sugar, plus the actual hydration benefit of cucumber and the antioxidants from mint and lime. The Centers for Disease Control and Prevention has clear guidelines on why reducing sugary beverages is one of the highest-impact dietary changes most adults can make.
Frequently asked questions
Can I make this without a blender?
Yes — muddle the cucumber and mint with the lime juice in the bottom of a glass using a wooden spoon, top with ice and sparkling water. The drink will be cloudier and more rustic, but no less refreshing.
Can I add sweetener?
If your cucumbers are particularly bitter, a teaspoon of honey or simple syrup balances things out. I rarely need it, but it's a personal call.
Method
- Blend cucumber, mint and lime juice with 1/2 cup water until smooth.
- Strain through a fine sieve, pressing to extract every drop.
- Pour into ice-filled glasses and top with sparkling water.
- Garnish with extra mint and a cucumber ribbon.
Cook's note
Add a thin slice of jalapeño to the blender for a grown-up, garden-party version.