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a bottle of watermelon hot sauce next to some serrano peppers and fresh watermelon

Watermelon Hot Sauce

Looking for a new way to spice up your meals?  Try this homemade serrano and watermelon hot sauce! 
Course Side Dish
Cuisine American, Carribean
Keyword serrano hot sauce, watermelon hot sauce
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings 120 teaspoons
Calories 2kcal
Author Snacking in Sneakers


  • 3 1/2 cups chopped watermelon
  • 12 serrano peppers, halved and seeded
  • 1/2 cup shredded carrots
  • 3 cloves garlic
  • 3 scallions, roughly chopped
  • 1/3 cup lime juice
  • 1/4 cup white vinegar
  • 1/2 cup water
  • 1/2 tsp salt


  • Place all ingredients in a high-speed blender. Blend for about 30-60 seconds, until well combined.
  • Pour the mixture into a pot, then simmer for 25 minutes over medium-low heat.
  • Let cool for about 15 minutes, the pour into a bottle or jar. Or as an alternative, you can first pour the sauce through a fine mesh strainer for a thinner, smoother sauce.


  • This makes about 20 ounces of hot sauce without straining. If you strain it, it will be around half of that amount.
  • For the nutrition analysis, we assumed one serving = 1 teaspoon, similar to most brands of jarred sauce. 20 ounces equals about 120 teaspoons of sauce.
  • If you prefer a hotter sauce, try substituting a couple serranos for habaneros.
Nutrition analysis (approximate per teaspoon): 2 calories, 0 g fat, 10 mg sodium, 0.5 g carbohydrate, 0 g protein, Vitamin A: 2%, Vitamin C: 1%, Calcium: 0%, Iron: 0%


Calories: 2kcal