Grilled jalapeno simple syrup brings smoky heat and balanced sweetness to a refreshingly bright watermelon margarita — an ideal summer cocktail for warm afternoons and backyard gatherings.
Summer is the perfect time to enjoy chilled, fruit-forward cocktails. This Grilled Jalapeno Watermelon Margarita combines fresh watermelon juice, citrus, tequila and a homemade grilled jalapeno simple syrup for a balanced drink that’s sweet, smoky and just spicy enough. The recipe is straightforward and adaptable: make it boozy with tequila, keep it alcohol-free as a mocktail, or swap spirits if you prefer. Below you’ll find step-by-step instructions, helpful tips, and variations to make this margarita your own.
Step by step instructions
- Prepare the grilled jalapeno simple syrup.
- Grill whole jalapenos over medium-high heat until the skins blister and blacken, turning so they char on all sides.
- Remove from heat, cut off the stems and dice the charred jalapenos (wear gloves if you’re sensitive to capsaicin).
- Combine the diced jalapenos, water and sugar in a small saucepan and bring to a boil. Stir until the sugar dissolves and the mixture simmers for 1–2 minutes.
- Strain the syrup through a fine mesh strainer to remove solids, then chill it in the refrigerator until cold.
- Make the watermelon juice.
- Add diced, seedless watermelon to a blender and puree until smooth. Strain if you prefer a clearer juice, or leave it slightly pulpy for texture.
- Assemble the margaritas.
- Fill two glasses with ice.
- Divide the watermelon juice between the glasses. Add lemon juice, tequila and grilled jalapeno simple syrup in equal portions.
- Stir gently to combine and garnish with a grilled lemon wheel and a jalapeno slice if desired.
Can you make it without a blender?
If you don’t have a blender, you can use commercially prepared 100% watermelon juice. Choose a high-quality juice with no added sugar or flavorings to keep the drink fresh and natural. Another option is to finely chop watermelon and press it through a sieve to extract the juice by hand.
How to grill jalapenos without a grill
To char jalapenos without an outdoor grill, place them under the oven broiler on a foil-lined pan. Broil for about 2–3 minutes per side until the skins are blistered and blackened. Rotate carefully to char evenly. The broiled peppers will develop similar smoky notes to grilled ones.
How to make a virgin margarita
To make a virgin Watermelon Margarita, simply omit the tequila. The watermelon juice combined with the jalapeno syrup and lemon juice makes a flavorful mocktail. For a sparkling mocktail, top each glass with a splash of club soda or sparkling water to add effervescence.
Can I make it with vodka instead of tequila?
Yes — substituting vodka gives you a different spirit profile that lets the watermelon and jalapeno flavors remain front and center. While it won’t be a classic margarita, the cocktail will still be delicious and well-balanced.
More watermelon recipes to try
- Watermelon Mojitos — a minty, bright alternative to a margarita.
- Watermelon Serrano Salsa — spicy, sweet, and perfect with chips or grilled fish.
- Sparkling Grapefruit Watermelon Sangria — a bubbly party pitcher full of summer fruit.
- Watermelon Lime Sherbet Float — a fun, nostalgic dessert drink for warm nights.
Tools used to make this recipe
- Outdoor or indoor grill, or an oven broiler for charring jalapenos and lemon slices.
- Small saucepan for simmering the simple syrup.
- Fine mesh strainer to remove solids from the syrup and juice if desired.
- Blender for quickly pureeing fresh watermelon into juice.
When you make this Grilled Jalapeno Watermelon Margarita, consider experimenting with the syrup amount to control heat: start with less jalapeno syrup and add more to taste. If you prefer a tangier drink, swap lemon for lime juice or use a mix of both. Serve cold and enjoy a bright, smoky, slightly spicy cocktail that celebrates ripe watermelon and warm-weather entertaining.
Grilled Jalapeno Watermelon Margaritas
Ingredients
Grilled Jalapeno Simple Syrup
- 2 jalapenos
- 1/2 cup water
- 1/2 cup sugar
Watermelon Margarita
- 2 cups diced watermelon
- 1 oz lemon juice
- 3 oz tequila
- 2 oz grilled jalapeno simple syrup
- 2 cups ice
Instructions
Grilled Jalapeno Simple Syrup
- Grill jalapenos over medium-high heat for 6–8 minutes, turning every 2–3 minutes, until skins are blistered and blackened. Remove stems and dice the peppers.
- Combine diced jalapenos, water and sugar in a small saucepan. Bring to a boil and stir until the sugar dissolves, about 2–3 minutes.
- Remove from heat, strain out the solids through a mesh strainer, and refrigerate the syrup until chilled—about 15–20 minutes.
Jalapeno Watermelon Margarita
- Blend the diced watermelon on high for 30–60 seconds until smooth.
- Divide watermelon juice between two glasses filled with ice. To each glass, add 1/2 oz lemon juice, 1 1/2 oz tequila and 1 oz grilled jalapeno simple syrup.
- Stir to combine and garnish with a lemon wheel and a jalapeno slice. Serve immediately.
Notes
- Simple syrup alternative: If you prefer, make a plain simple syrup by boiling equal parts water and sugar, then cool before adding to cocktails.
- No blender? Use 100% watermelon juice from the store or press chopped watermelon through a sieve to extract juice.
- Adjust heat: Control spiciness by using fewer jalapenos or adding less syrup; seeds and membranes contain most of the heat.