Mint and Key Lime Ice Cream Recipe: Refreshing Citrus-Mint Gelato

I had an abundance of limes and a bunch of fresh organic mint leaves and began imagining what to make. The idea of combining lime and mint into an ice cream suddenly felt irresistible. The result was an incredibly creamy, refreshingly tart and sweet ice cream that balances bright citrus with cool mint. Even someone who claimed not to be an ice cream fan loved it.

The combination felt like a little culinary revelation. The lime adds zesty brightness while the mint brings fresh herbal notes, creating a sophisticated and lively flavor profile. This ice cream is refreshing, not overly sweet, and perfect for warm days or as a palate-cleansing dessert.

I searched online to see if anyone had paired mint and lime in a single ice cream recipe and found plenty of mint ice creams and key lime ice creams—but rarely both together. That convinced me to create my own version. If you can find key limes, great—their flavor is very concentrated—but regular limes work well too. If you prefer a plain ice cream, you can omit the lime and mint and follow the same custard base.

You don’t need an ice cream maker to achieve a smooth, creamy texture. I don’t own one and use a simple freezer method with frequent stirring to prevent large ice crystals and create a scoopable consistency. Below is the full recipe and step-by-step instructions.

1. In a medium pot, combine the milk, heavy cream, and half-and-half. Heat over medium, stirring occasionally so the dairy does not scorch. If you don’t have half-and-half, you can use a mix of equal parts milk and cream to reach the same richness.

2. Add the mint leaves to the warm milk mixture so they infuse their flavor as it heats. Let the mixture get hot but do not let it boil.

3. Meanwhile, in a bowl whisk together the egg yolks and sugar until smooth and slightly thickened.

4. When the milk and cream are hot, transfer them to a blender and blend briefly to break up the mint leaves and release their oils. Pour the blended dairy back into the pot through a fine strainer to remove large leaf fragments.

5. Halve the limes and squeeze the juice, straining out seeds. Keep the milk mixture on medium heat while you do this, stirring occasionally and avoiding boiling.

6. Temper the eggs: slowly add a cup or two of the hot milk mixture into the egg yolk and sugar mixture while whisking constantly. This warms the eggs without cooking them. Then pour the tempered egg mixture back into the pot with the remaining milk mixture, stirring continuously.

7. Add the freshly squeezed lime juice and vanilla extract (if using). Continue to cook over medium-low heat, stirring often, until the custard thickens and coats the back of a wooden spoon. Do not let it boil.

8. Remove from heat and pour the custard into a bowl. Press plastic wrap directly onto the surface to prevent a skin from forming, then chill thoroughly in the refrigerator until completely cold—several hours or overnight works well.

9. Once chilled, whisk the custard to lighten it. If you have an ice cream maker, churn according to the manufacturer’s instructions. If not, transfer the mixture to a shallow, freezer-safe container and place in the freezer. Every 15–30 minutes, remove and stir vigorously (or beat with a mixer) to break up ice crystals until it reaches a smooth, scoopable consistency. This may take a few hours; frequent stirring yields creamier results.

10. When the ice cream is firm and smooth, transfer to a lidded container and let it harden in the freezer if needed. Before serving, allow it to sit at room temperature a few minutes for easier scooping.

Enjoy a refreshing scoop of mint and key lime ice cream—bright, creamy, and perfect for warm weather or a light, flavorful dessert.