Place the condensed milk, half and half, and key lime juice in a bowl.
Stir the ingredients together using a whisk until they are well combined.
Pour the mixture into the freezer can of the ice cream maker.
Follow the instructions provided by the ice cream maker's manufacturer to freeze the mixture.
Notes
Tips and Tricks
Use Fresh Key Lime Juice for Stronger Flavor - Fresh key lime juice gives a brighter citrus taste than bottled juice.Add Graham Cracker Crumbs Before Serving - Sprinkle graham cracker crumbs over each serving if you want it to taste more like key lime pie.Freeze Longer for Firm Scoops - The ice cream may be soft right after churning. Place it in a freezer-safe container and freeze longer for a firmer texture.Soften Before Serving - Let the ice cream sit at room temperature for 5 to 10 minutes before scooping if it is too firm.