Oh my gosh, you have no idea how excited I am to share this Big Batch Watermelon Mojito recipe with you! Picture this: it’s a blistering summer afternoon, your friends are lounging around the backyard, and you casually pull out this gorgeous pink pitcher of pure refreshment. That’s exactly what happened at my last barbecue – total game changer. I’ve been making party drinks for years (ask anyone who’s been to my Fourth of July bashes), and this watermelon mojito always disappears first.

What makes it so special? Well, first off – watermelon juice. Not that bottled stuff, but real, fresh watermelon you blend yourself until it’s silky smooth. Combined with handfuls of mint from my garden (okay fine, sometimes it’s from the grocery store) and just the right amount of lime, it’s like summer in a glass. The rum? Totally optional, but highly recommended for that authentic mojito kick.
The best part? This recipe makes enough for a crowd without you having to play bartender all night. Just one quick mix in a big pitcher, and you’re the hero of the party. Trust me, after one sip, your guests will be begging for the recipe – mine still do!
Table of Contents
Why You’ll Love This Big Batch Watermelon Mojito
This isn’t just another cocktail recipe, it’s your new secret weapon for summer entertaining. Here’s why everyone goes crazy for it:
- Unbelievably refreshing: That sweet watermelon and zingy lime combo cuts through the summer heat like nothing else.
- Party-perfect portions: No more mixing drinks one by one, this big batch means more time with your guests!
- Foolproof to make: Just blend, muddle, and stir. Even my cousin who burns ice cubes can handle this.
- Totally customizable: Make it boozy or not, sweeter or more tart, it’s your call.
- Instagram-worthy: That gorgeous pink color? Guaranteed to make your friends go “Oooh!”
Seriously, this mojito checks all the boxes. Last summer, I brought it to three different barbecues, and every time, empty pitcher by sunset.
Ingredients for Big Batch Watermelon Mojito
Alright, let’s talk ingredients – and I mean the good stuff. This isn’t one of those cocktails where you can cut corners. Believe me, I’ve tried (and regretted it). Here’s exactly what you’ll need to make the most refreshing watermelon mojito your taste buds have ever met:
- 8 cups watermelon, cubed (seedless is best unless you enjoy spitting seeds into your drink like I did that one embarrassing time)
- 1 cup fresh mint leaves, packed (don’t be shy – really press those leaves into the measuring cup for maximum flavor)
- 3/4 cup fresh lime juice (about 6-8 limes, depending on how juicy they are – none of that bottled stuff, please!)
- 3/4 cup simple syrup (equal parts sugar and water heated until dissolved – I make mine with 3/4 cup each)
- 1 1/2 cups white rum (optional, but highly encouraged – I’m partial to Bacardi for this, but use your favorite)
- 4 cups club soda (chilled is best – the fizzier, the better!)
- Ice (lots of it – I like using one big block in the pitcher and cubes in the glasses)
- Lime slices and mint sprigs for garnish (because we eat with our eyes first, right?)
Quick note: if you’re out of simple syrup, you can use agave nectar instead – just start with 1/2 cup and adjust to taste. And for my non-alcoholic friends, skip the rum and add an extra cup of club soda. Easy peasy!
Equipment Youโll Need
Okay, let’s gather our tools – nothing fancy here, just the basics that’ll make this mojito magic happen:
- A good blender (my ancient Oster still does the trick)
- Large pitcher (at least 2 quarts – trust me, you’ll need the space)
- Fine-mesh strainer (for silky smooth watermelon juice)
- Muddler or wooden spoon (I’ve used the back of a fork in a pinch)
- Measuring cups (eyeballing never works for me with cocktails)
That’s it! No fancy bar tools required – just stuff you probably already have in your kitchen.
How to Make a Big Batch Watermelon Mojito
Alright, let’s get mixing! This couldn’t be simpler – I’ve made this recipe half-asleep after a long day (true story), and it still turns out amazing every time. Just follow these easy steps, and you’ll be sipping summer in no time.
Step 1: Prepare the Watermelon Juice
First things first – we need that gorgeous pink watermelon juice. Toss your cubed watermelon into the blender (no need to pack it down) and blend on high until it’s completely smooth, about 30 seconds. Now, here’s my secret: pour it through a fine-mesh strainer into a bowl to catch all those little pulp bits. Sure, you could skip this step, but trust me – straining makes the texture silky smooth instead of slightly grainy. Learned that the hard way at my first attempt!
Step 2: Muddle Mint and Lime
Grab your pitcher and toss in those fresh mint leaves with the lime juice and simple syrup. Now, take your muddler (or wooden spoon) and gently press down on the mint – we’re not making pesto here! Just enough pressure to release those amazing oils without tearing the leaves to shreds. You’ll know it’s ready when the mint smells incredible and the lime juice turns slightly green around the edges. This step takes about 30 seconds of gentle pressing – your nose will tell you when it’s perfect.
Step 3: Combine and Serve
Time to bring it all together! Pour your beautiful strained watermelon juice into the pitcher with the mint mixture. Add the rum if you’re using it (no judgment either way), then slowly stir in the club soda. Here’s the key – stir gently with a long spoon to keep all that lovely fizz intact. Fill your glasses with ice (crushed is my favorite for maximum chill), pour, garnish with lime slices and mint sprigs, and serve immediately. Pro tip: keep extra club soda handy to top off glasses as needed – the bubbles do fade after about 30 minutes.

Tips for the Perfect Big Batch Watermelon Mojito
After making this mojito more times than I can count (seriously, my friends won’t let me show up without it), I’ve picked up some foolproof tricks:
- Chill everything first – glasses, pitcher, even the watermelon if you have time. Cold drinks stay crisp longer.
- Taste as you go – add simple syrup gradually until it’s just sweet enough for your crowd.
- Use the ripest watermelon you can find – tap it and listen for that deep hollow sound. No flavor hiding in an underripe melon!
- Add club soda last-minute – pour it in right before serving to keep those bubbles lively.
- Double the mint garnish – the aroma hits your nose before the first sip, making the whole experience magical.
Follow these, and you’ll be the mojito master of every summer gathering!
Variations and Substitutions
The beauty of this watermelon mojito? It’s like a choose-your-own-adventure book, so many ways to make it your own! Here are my favorite twists after years of experimenting:
For a non-alcoholic version, just skip the rum and add an extra splash of club soda or ginger ale for zing. My niece loves when I blend in frozen strawberries for a “pink unicorn” version (her words, not mine).
Out of watermelon? Cantaloupe makes a surprisingly delicious substitute, it’s mellower but still refreshing. And if mint isn’t your thing, try basil for an herbal kick or rosemary for something woodsy.
For a tropical vibe, swap half the watermelon with pineapple chunks, it plays nicely with the lime. And if you’re feeling fancy, a splash of coconut water instead of some club soda takes you straight to the islands!
Serving and Storage Suggestions
Here’s how I make sure every glass of this watermelon mojito tastes like it was mixed just for you! Always serve it ice-cold – I like filling glasses to the brim with ice cubes before pouring. Those lime slices and mint sprigs aren’t just pretty – squeeze the lime slightly and slap the mint between your palms before adding for maximum aroma.
Got leftovers? Store the base (without club soda) in the fridge for up to 2 days – the flavors actually get better! Just stir in fresh soda when you’re ready to serve again. Pro tip: freeze some of the watermelon juice in ice cube trays – they’ll chill without watering down your drink!
Big Batch Watermelon Mojito FAQs
I get asked these questions ALL the time when I serve this mojito – so let me save you the trouble of having your guests bombard you while you’re trying to enjoy the party!
Can I make this watermelon mojito ahead of time?
Absolutely! Here’s my go-to party trick: mix everything except the club soda up to 24 hours in advance. Keep it chilled in the fridge, then add the soda right before serving. The flavors actually deepen overnight – bonus!
What’s the best rum substitute?
If you’re out of white rum, silver tequila makes a fantastic swap (I call it a “watermelon margarita-mojito hybrid”). Vodka works too, though it lets the watermelon shine more. For a fun twist, try coconut rum – it’s like vacation in a glass!
How do I know if my watermelon is sweet enough?
Give it the sniff test! A ripe watermelon should smell sweet at the stem end. No scent? Probably not sweet enough. When in doubt, taste a cube before blending – you can always add a touch more simple syrup later.
Can I freeze leftovers?
Sort of! The texture changes, but I freeze the blended watermelon juice in ice cube trays for future batches. The mint-lime mixture? Not so much – fresh is best there. Frozen mojito popsicles though? Now that’s an idea!
Still have questions? Hit me up in the comments – I’ve probably tested every variation imaginable by now!
Nutritional Information
Okay, let’s be real – we’re not drinking mojitos for their health benefits! But here’s the basic scoop per serving (because someone always asks at parties): About 140 calories, 15g carbs (mostly from that delicious watermelon), and zero fat. Remember – these are just estimates and will vary based on your exact ingredients and how heavy-handed you are with the simple syrup. Nobody’s judging!
Final Thoughts
There you have it – my absolute favorite summer drink that never fails to impress! I can’t wait for you to try this Big Batch Watermelon Mojito at your next gathering. When you do, come back and tell me all about it, and tag me on Instagram @recipesbycharlotte. Did your guests go wild? Any fun twists you added? Now go grab that watermelon and start blending – your perfect summer sip awaits!
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Big Batch Watermelon Mojito
- Total Time: 15 minutes
- Yield: 8 servings 1x
- Diet: Low Lactose
Description
This refreshing Big Batch Watermelon Mojito is the ultimate summer drink. Fresh watermelon, mint, and lime come together with a splash of rum (optional) for a cool and vibrant cocktail thatโs perfect for parties, cookouts, or warm evenings on the porch.
Ingredients
- 8 cups watermelon, cubed
- 1 cup fresh mint leaves
- 3/4 cup fresh lime juice
- 3/4 cup simple syrup
- 1 1/2 cups white rum (optional)
- 4 cups club soda
- Ice
- Lime slices and mint sprigs, for garnish
Instructions
- Blend watermelon in a blender until smooth, then strain to remove pulp.
- In a large pitcher, muddle mint leaves with lime juice and simple syrup.
- Stir in the fresh watermelon juice, rum if using, and club soda.
- Fill glasses with ice, pour in the mojito, and garnish with lime slices and mint sprigs. Serve immediately.
Notes
- For a non-alcoholic version, omit the rum.
- Adjust sweetness by adding more or less simple syrup.
- Serve chilled for the best taste.
- Prep Time: 15 minutes
- Cook Time: 0 minutes
- Category: Cocktail
- Method: Blending and Mixing
- Cuisine: Caribbean
Nutrition
- Serving Size: 1 serving
- Calories: 140 kcal
- Sugar: 12 g
- Sodium: 10 mg
- Fat: 0 g
- Saturated Fat: 0 g
- Unsaturated Fat: 0 g
- Trans Fat: 0 g
- Carbohydrates: 15 g
- Fiber: 1 g
- Protein: 1 g
- Cholesterol: 0 mg
Keywords: watermelon mojito, summer cocktail, big batch mojito, watermelon drink, party cocktail