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This frozen watermelon slushie cocktail is the perfect way to cool down with friends on a hot summer night. It’s made with just 4 simple ingredients and can be enjoyed with or without alcohol.
Whether I’m having a cocktail or mocktail, or I just want something refreshing like a glass of lavender lemonade, I find that the homemade option is always the move. Pre-made mixes are usually way too sweet and sometimes also have unnecessary additives.
If you live in a hot climate in the summer, which is basically everyone now, you know that cold beverages in some form are 100% necessary to survive the heatwave. Which is why this frozen watermelon slushie always hits the spot.
Ingredients For Watermelon Slushie Cocktails
- Watermelon – the riper and juicier the better.
- Fresh lime juice – helps to balance out the sweetness.
- Clear alcohol of choice – tequila, vodka, gin, or white wine.
- Simple syrup – basil, lime, or strawberry simple syrup would be amazing! But plain is great, too.
- Flaky salt – optional.
Substitutions & Variations
Please remember that recipes are just a starting point.
How can you make this watermelon slushie cocktail using what you already have? Here are some ideas…
- Don’t drink alcohol? – use water or coconut water in place of the alcohol (I personally love the mocktail version. Plus, it’s also kid-friendly.)
- No fresh lime juice? – Pure lime juice in a jar also does the trick.
- No simple syrup? – maple syrup will work, but I highly recommend the simple syrup for a clean finish.
- Variations – try other kinds of melon and get creative with infused simple syrups to create endless variations.
A high-powered blender works really well for getting a smooth yet frozen consistency, using the tamper as needed. If you only have a standard blender, you may need to blend the watermelon cubes in smaller batches and/or stop and scrape down the sides as needed.
You could also try making it in a food processor.
The simple syrup helps to intensify the flavor of the watermelon. How much you add will depend on how sweet your fruit is, so adjust accordingly.
More Summer Recipes You’ll Love
- Peach Panzanella Salad
- Creamy Chicken Corn Chowder
- The Best Ever Shishito Peppers
- Savory Zucchini Pancakes
Frozen Watermelon Slushie Cocktail (Alcohol-Free Option)
- 4 cups watermelon cubes
- 3 tbsp fresh lime juice
- 2-3 tbsp simple syrup see notes
- 4 ounces clear alcohol such as tequila, vodka, gin, or white wine or water
- pinch flaky salt + more for rim (optional)
- Place the watermelon cubes in a single layer on a lined baking sheet and freeze for about 3-4 hours or until completely frozen.
- Make the simple syrup around the same time you freeze the watermelon so that it's nice and cold when you're ready to make your slushie.
- To a blender, add the frozen watermelon cubes, fresh lime juice, alcohol or water of choice, simple syrup, and pinch of salt. Blend until smooth (you may need to stop and scrape down the sides or use a tamper if your blender has one).
- Serve in a chilled glass with a salted or sugared rim (optional).