Go Back Email Link
–+ servings
A bottle of key lime simple syrup sits on a wooden cutting board in the sunlight. A small pile of key limes sits on the cutting board next to the bottle of simple syrup.

Key Lime Simple Syrup

Lindsey Neumayer
This key lime simple syrup recipe is bright and zesty while also being sweet and tart. It's made with regional key limes, including the zest and the juice, for a delicately floral citrus flavor. Use this syrup in all of your drinks, from coffee and tea to cocktails!
5 from 1 vote
Print Recipe Pin Recipe Rate this Recipe
Prep Time 20 minutes
Cook Time 30 minutes
Cooling Time 30 minutes
Total Time 1 hour 20 minutes
Course Cocktail, Coffee, Drinks, Mocktail, Simple Syrup
Cuisine American, Caribbean, Mexican
Servings 12 ounces
Calories 96 kcal

Wanna save this recipe for later? 📬

I'll email this recipe post to you so you can have it for later!

Equipment

  • 1 1.5-quart saucepan non-reactive metal, like stainless steel or enameled cast iron
  • 1 fine mesh sieve non-reactive metal
  • 1 glass measuring cup
  • 1 spatula or spoon
  • 1 microplane zester
  • 1 citrus juicer handheld or electric (electric will be faster!)

Ingredients
  

  • 1 1-pound bag key limes enough to get 1 cup of juice
  • 300 grams sugar 1.5 cups
  • grams filtered water 1/2 cup

Instructions
 

  • Wash and dry the key limes before juicing them.
  • Zest 6 of the key limes carefully using a microplane.
  • Slice and juice approximately 20 key limes to get 240 grams of juice (1 cup).
  • Add 118 grams of water (1/2 cup) to a small saucepan and place it over medium heat.
  • Add 300 grams of sugar (1 cup) and stir it until it dissolves.
  • Once the sugar is dissolved, add in the key lime juice.
  • Allow the pan to come to a low simmer over medium heat for 15-20 minutes.
  • Turn off the heat and allow the mixture to cool for at least 30 minutes.
  • Strain the simple sryup through a fine mesh strainer to remove the zest.
  • Store your finished simple syrup in an airtight container in the fridge for up to 2 weeks, or freeze for up to 3 months.

Nutrition

Serving: 1ounceCalories: 96kcalCarbohydrates: 25gProtein: 0.003gFat: 0.1gSodium: 0.3mgPotassium: 1mgFiber: 0.01gSugar: 25gVitamin A: 0.3IUVitamin C: 0.1mgCalcium: 0.4mgIron: 0.02mg
Did you make this?! 👀Let everyone know how it was! 💕
Keyword: key lime, lime, simple syrup