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Spicy Watermelon Lime Mocktail

ByKristen Wood Last updated

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If you’ve made my spicy watermelon lime syrup, this spicy watermelon mocktail is the obvious next step. It comes together in about two minutes and tastes like something you’d order at a restaurant. Sweet, tart, fizzy, and just spicy enough to keep things interesting, it’s an easy alcohol-free drink that’s perfect for hot days, happy hours, and everything in between.

A round glass filled with a spicy watermelon mocktail, orange fizzy drink, ice cubes, a lime wheel on the rim, and a red garnish, placed on a green striped surface with a cut lime nearby.

A Note From Kristen

I made this the same day I finished a batch of the syrup and immediately knew it needed its own post. I’ve been drinking it all week over ice with a squeeze of fresh lime and it hasn’t gotten old. It’s the kind of thing you make once and then find yourself keeping syrup stocked in the fridge specifically so you can make it again. Happy sipping!
~Kristen

A glass of orange-pink spicy watermelon mocktail, garnished with a lime wedge and cherry, sits on a green tiled surface beside a sliced lime, drink jar, and chili pepper.

Ingredient Notes

A few quick notes on the ingredients that matter most. Find the full ingredient list and instructions in the recipe card below.

  • Spicy Watermelon Lime Syrup: This recipe is built around my homemade spicy watermelon syrup. Make a batch ahead of time and keep it in the fridge for up to 10 days.
  • Sparkling Water: Plain sparkling water works best so it doesn’t compete with the syrup. Club soda, San Pellegrino, plain La Croix, or any unflavored sparkling water all work well.
  • Lime Juice: Fresh works best here!
A round glass of spicy watermelon mocktail with ice, garnished with a lime wheel and red chili, sits on a green tiled surface. A halved lime and whole chili are in the background.

Ways to Enjoy It

  • Serve over a big handful of ice in a nice glass for a classic mocktail.
  • Rim the glass with a mix of flaky salt and chili powder for extra flair.
  • Add a splash of coconut water in place of some of the sparkling water for a tropical twist.
  • Turn it into a cocktail by adding 1.5 oz tequila or mezcal
A glass of spicy watermelon mocktail with ice, a lime wheel garnish, and a red chili pepper inside, placed on a green tiled surface with a chili pepper and a lime half nearby.

Kristen’s Top Tips

  • Stir gently after adding the sparkling water so you keep the fizz.
  • Taste before serving. Depending on your syrup batch and lime, you may want a touch more of either.
  • Make the syrup ahead and keep it cold so this comes together in under two minutes whenever you want it.
  • Thin Fresno pepper slices make a great garnish and add a little extra heat if you want it. Better yet, if you reserve the peppers from making the syrup, you have an instant candied pepper garnish!
A glass of spicy watermelon mocktail garnished with a lime slice and red chili, with a jar of red liquid and half a lime in the background on a green tiled surface.

More Refreshing Drinks to Love

A glass of iced orange cocktail garnished with a lime slice and red chili peppers sits on a green tiled surface beside a halved lime and a whole red chili pepper—a refreshing twist on the spicy watermelon mocktail.

A round glass filled with a spicy watermelon mocktail, orange fizzy drink, ice cubes, a lime wheel on the rim, and a red garnish, placed on a green striped surface with a cut lime nearby.

Spicy Watermelon Lime Mocktail

Author: Kristen Wood
111kcal
No ratings yet
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Prep 5 minutes
Cook 0 minutes
Total 5 minutes
This spicy watermelon lime mocktail is the perfect balance of sweet, tart, fizzy, and spicy. Homemade spicy watermelon syrup, fresh lime juice, and sparkling water come together in minutes for a refreshing mocktail that feels restaurant-worthy without the effort.
Servings 1 serving
Course Drinks
Cuisine American
Diet Gluten Free, Vegan, Vegetarian
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Ingredients

  • 2 tablespoons Spicy Watermelon Lime Syrup
  • 1 tablespoon lime juice
  • 8 ounces plain sparkling water
  • Ice
  • lime wedges optional garnish
  • fresno pepper slices optional garnish

Method

  1. Fill a glass with ice.
  2. Add the syrup and lime juice.
  3. Top with sparkling water. Stir gently.
  4. Garnish, serve, and enjoy!

Notes

If you reserve the pepper slices from making the syrup, you have an instant candied pepper garnish!
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Nutrition

Serving1mocktailCalories111kcalCarbohydrates31gProtein0.1gFat0.01gSodium71mgPotassium47mgFiber0.1gSugar30gVitamin A8IUVitamin C5mgCalcium19mgIron1mg

Nutritional information is automatically calculated using a third-party calculator and is an estimate only.

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Kristen is a writer, photographer, recipe developer, and certified functional nutrition expert. She is also the author of Fermented Hot Sauce Cookbook, Vegetarian Family Cookbook, and Hot Sauce Cookbook for Beginners. Her work has been featured in various print and online publications including Elle, NBC, Chicago Sun-Times, Martha Stewart, MSN, New York Daily News, Healthline, and many more. Kristen is also a syndicated writer for The Associated Press.

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