01 - Combine diced pineapple, granulated sugar, and lemon juice in a saucepan. Cook over medium heat for 5 minutes until pineapple softens and sugar dissolves. Remove from heat and let mixture cool completely.
02 - Transfer the cooled pineapple mixture to a blender or food processor and blend until smooth.
03 - In a large bowl, whisk heavy cream, whole milk, vanilla extract, and salt until well combined. Stir in pineapple puree.
04 - Cover the bowl and refrigerate the ice cream base for at least 2 hours until thoroughly chilled.
05 - Pour the chilled mixture into an ice cream maker and churn according to manufacturer’s instructions (typically 20 to 30 minutes) until thick and creamy.
06 - Transfer churned ice cream to a freezer-safe container. Cover and freeze for at least 4 hours or until firm.
07 - Allow ice cream to stand at room temperature for 5 minutes before scooping and serving.