Intro — It Started, As Always, at the Fruit Stall
Every summer — every single summer, without fail, I don’t know why I expect it to change — there comes a watermelon that is simply too big. You know the one. Of course you know the one. The fruit guy swears blind it’s a medium, you get it home, and it does not fit the fridge shelf properly, not even close, so it ends up living on the counter, taking up half of it, half, and for three days the whole household walks past it thinking the exact same thought in the exact same tone: somebody else will deal with that. Well. Friends. This juice is how I deal with it — half a melon vanishes into a jug in about ten minutes, the counter is free, the fridge can breathe again, and suddenly, somehow, the too-big watermelon has become the best decision anybody made all week; my neighbour saw the jug last summer, asked what was in it, and now buys the oversized ones on purpose, deliberately, which tells you everything, it really does.
Quick story first, because it cost me a cleanup and you may as well get the lesson for free: the first time I made this, I filled the blender right up to the lid. Right to it. Watermelon, it turns out, becomes a LOT of juice — the stuff is basically flavoured water wearing a fruit costume — and the lid, which I had pressed on with great confidence, did not survive the experience. Pink kitchen. Pink counter, pink floor, a pink stripe up one cabinet that I still find traces of. So: fill your blender two-thirds full at most. Learn from my walls, they’re still teaching the lesson.
You don’t need a juicer — put that idea away — you don’t need added sugar if your melon is decent, and you don’t need to strain it unless you want to. That’s the whole sales pitch. Here’s the whole thing.
Why You’ll Love This Recipe
Watermelon is over 90% water, which means it basically blends into juice by itself if you look at it firmly — no pressing, no squeezing, no special equipment gathering dust in a cupboard. The flavour is clean and properly refreshing and cold in a way that actually fixes a hot afternoon instead of just distracting you from it for five minutes, which is more than I can say for most summer drinks.
And it takes well to small changes, it welcomes them. Lime sharpens it, mint cools it, a bit of ginger gives it a kick that wakes the whole table up. Plus — and this is the practical bit — one melon makes a big batch, a proper jug, so it’s a genuinely useful recipe for parties and barbecues, the kind of thing you make once and pour from all afternoon while pretending it was effort.
Ingredients
- About 8 cups of watermelon flesh, cubed and seeds removed (roughly 1.2 kg / 2 1/2 lbs) — that’s from about half a medium watermelon, “medium” being a word fruit sellers use very loosely, as we’ve established
- Juice of 1 lime (about 2 tablespoons), plus more to taste — lime is the steering wheel on this drink, keep it handy
- 8 to 10 fresh mint leaves (optional but very good) — from the pot by the door if you’re lucky, from the shop if you’re me
- Pinch of sea salt — sounds odd, I resisted it too, makes the sweetness pop, just trust the process once
- 1 teaspoon grated fresh ginger (optional) — a little fire in the background, entirely your call
- Ice, for serving — and plenty of it, this is not an ice-optional situation whatever else is
- Extra mint sprigs and small watermelon wedges, to garnish — the bit that makes people think you know what you’re doing
A note on the melon itself, because it decides everything: pick one that feels heavy for its size, heavier than it looks like it should, with a creamy yellow spot on the skin where it sat on the ground ripening — a decent sign it ripened properly and did its time in the sun. Get a properly ripe melon and you need nothing else in that jug: no sugar, no syrup, nothing. Get a pale, underripe one and we’re into rescue operations, which are covered below, but it’s better not to need them.
Step-by-Step Instructions — Blender, Jug, Done, Basically
- Cut the watermelon — and cut it without fear, that’s the instruction, standing over it worrying helps nobody — slice it in half, then down into wedges, the way you’d serve it at a picnic, and then cut the flesh away from the rind and chop it into rough cubes of about 1 inch, rough being very much the operative word. Rough is the word — the blender does not grade your knife work, nobody is inspecting these cubes, just get them off the rind and into the bowl.
- Deal with the seeds, in inverted commas, because there is less dealing than people think. If you bought a seedless melon, you’re done, move on with your life. If not, pick out the big black seeds as you cube, the obvious ones, the ones that look at you. The small white ones can stay exactly where they are; they’re soft and the blender handles them without complaint. Whole job takes two minutes, and it is not worth stressing about perfection — a missed seed has never ruined a jug in the history of this house.
- Load the blender — two-thirds full, remember, we have the pink walls as a permanent memorial to step three going wrong. Watermelon cubes in, then the lime juice, the mint leaves, the salt and the ginger if you’re using it. And no water, that’s the part that surprises people: the watermelon provides all the liquid all by itself, more than enough. Only if your blender struggles to get going — older machine, frozen mood — add 1/4 cup (60 ml) of cold water to help it catch.
- Blend for 30 to 45 seconds on high, just until it’s completely smooth, and then stop, actually stop. Don’t keep it roaring for minutes like you’re making a smoothie for a bet — all that does is warm the juice up and beat air into it, and warm, frothy watermelon juice is a step backwards. Short and done. Off.
- Taste it. This is the step people skip, and they shouldn’t, it’s the difference between juice and good juice. Too flat? More lime, almost always more lime. Not sweet enough because the melon was underripe and lied to you at the shop? A teaspoon of honey fixes it and disappears into the background. You’re the one drinking it, you’re the judge, nobody else’s palate is on the line here.
- Strain only if you want to — want being the whole sentence. The juice has a little body from the pulp, and I like it that way, feels like fruit, tastes like fruit. If you prefer it silky, for a party jug say, where you’re performing a bit, pour it through a fine-mesh sieve and press the pulp lightly with the back of a spoon. Lightly. Press hard and it goes cloudy, and then you’ve got cloudy juice and a sieve full of regrets.
- Chill it and serve it like you mean it. If you’ve got the time, the jug goes in the fridge for at least 30 minutes, because watermelon juice is twice as good properly cold, that’s not an opinion, that’s close to physics. Serve it over ice with a mint sprig and a little watermelon wedge balanced on the glass if you’re feeling presentable — and on a hot day, with people arriving, you should feel presentable. It takes four seconds and everybody photographs it.
Tips / Common Mistakes
- Don’t add sugar before tasting — I know, I know, the hand hovers, resist it — because a ripe watermelon is already sweet, properly sweet, properly, and the moment you go sweetening juice before you’ve even tried it you’ve lost that fresh quality that made it worth making in the first place, and there’s no road back from there; taste first, judge after, that’s the order of operations and it is not negotiable.
- Keep it cold throughout — end to end, the whole way through, cold is half the recipe — and if the melon was sitting at room temperature, and in summer, on that counter, it absolutely was, then blend in a handful of ice cubes at the end and bring it back down where it belongs, because lukewarm watermelon juice is a completely different and much sadder drink.
Variations & Substitutions — Argued About at Every Barbecue
Watermelon and strawberry: you replace 2 cups of the watermelon with fresh strawberries — that’s the whole method, don’t let anyone complicate it — and what you get is a deeper colour, a slightly tarter edge, and a table that will argue, happily, at length, about whether it’s better than the original, which is exactly, precisely, the kind of argument a summer afternoon is for.
Frozen version: freeze watermelon cubes on a tray — spread out, not in a great fused lump, learn from people who have stood there chipping at the lump — then blend them frozen with the lime and mint and you get a slushy-style drink with, and this is the beautiful part, no ice needed anywhere in it, and nothing diluting as it melts, which, if you’ve ever sat nursing a watery last glass at a barbecue, watching it go pale, you’ll recognise immediately as the superior engineering.
Serving Suggestions — Big Glasses, No Fuss
This is barbecue juice, picnic juice, “it’s too hot to think” juice — the jug genuinely does not care what the occasion is, it has range, it shows up everywhere and it has never once been the wrong call. Serve it in big glasses over plenty of ice, or park the jug right in the middle of the table with the grilled food, because it cuts through rich, salty things like kebabs and burgers beautifully, resets the palate, keeps everybody going back for more of both. And for kids, pour it into ice-lolly moulds and freeze for about 4 hours; easiest summer treat going, and I say that as a man who has been handed full credit for it by several small people who watched me do almost nothing.
Storage & Reheating
Leftovers. Ha. Assuming the afternoon leaves any — it usually doesn’t, but assuming. Covered jug or a sealed bottle, fridge, and you’ve got up to 24 hours. No longer. Don’t push your luck. And even inside that window it is living its best life in the first stretch, so don’t save it like it’s wine. It will separate in there, by the way. The pulp drifts down, settles at the bottom like it’s settling in for a nap. Normal. That’s just juice behaviour, nothing’s wrong. Stir it, shake it, pour it, carry on. After a day, though — you’ll taste it. The fresh flavour drops off, noticeably, falls right off a cliff. So the rule stands: make what you’ll drink, and drink what you make. Reheating? No. Obviously no. The very idea. This one is served cold — strictly, end of discussion. And a parting gift, because I can’t leave it there: leftover melon cubes — the other half of the too-big watermelon, sitting there waiting for its moment — freeze well for up to 3 months and blend straight from frozen another day, no thawing, no planning, so even that other half has a future, a cold and glorious future.
FAQs — Asked Every Single Summer
Do I need a juicer to make watermelon juice — because the cupboard is full enough?
No — genuinely no, and I need you to put the juicer catalogue down, step away from the catalogue — because a regular blender does the whole job here, the whole job, and it does it because watermelon is mostly water to begin with, it’s a drink that was already most of the way to being a drink before you touched it. Blend, strain if you like, done — the machine you already own is the machine for this.
Should I strain watermelon juice?
Only if you prefer a smooth, pulp-free drink, it’s taste, not law. Unstrained juice has a bit more body and keeps more of the fruit in the glass. Both are fine, both are served at my table, the argument is purely traditional at this point.
How do I know if my watermelon is sweet enough — before it’s too late?
Three signs, and they’re all old ones, all handed down, all reliable: it should feel heavy for its size — heavier than it looks, that’s the tell — it should sound hollow when you tap it, and it should have that creamy yellow patch on the skin, the sunbathing spot; and if the juice still tastes flat after all that, which happens, melons lie, melons have lied to me personally, then lime and a pinch of salt fix it faster than sugar does, every time, every single time, it’s not even close.
Can I make watermelon juice ahead for a party?
Make it the same morning at the earliest, not the night before, however tempting the head start is. Keep it covered in the fridge, give it a stir before serving — it will have settled, it always settles — and just know, going in, that it is at its best within a few hours, so blend close to the event if you can, as close as you dare, because fresh is the whole point of the exercise.
Nutrition (Estimate — For the Curious, Roughly)
Per glass — about 1 1/2 cups, 355 ml if you’re measuring, unsweetened, the way it comes out of the blender — you’re at roughly 90 calories, 0 g fat, 23 g carbohydrates, 1 g fiber, 2 g protein and 18 g natural sugars, and all of that is an estimate only, based on plain watermelon, lime and mint and nothing else, because the moment somebody talks you into a garnish buffet, well, that’s between you and the jug, I can’t help you there.
