01 - Combine diced pineapple, granulated sugar, and lemon juice in a saucepan. Cook over medium heat for 5 minutes, stirring occasionally, until the pineapple softens and sugar dissolves. Remove from heat and allow to cool to room temperature.
02 - Puree the cooled pineapple mixture using a blender or food processor until completely smooth.
03 - In a large bowl, whisk together heavy cream, whole milk, pure vanilla extract, and salt until fully blended. Stir in the pineapple puree.
04 - Cover the bowl and refrigerate the mixture for a minimum of 2 hours to ensure proper chilling.
05 - Pour the chilled mixture into an ice cream maker and churn according to the manufacturer's instructions, typically 20 to 30 minutes, until thick and creamy.
06 - Transfer the churned ice cream to a freezer-safe container. Cover and freeze for a minimum of 4 hours or until set to a firm consistency.
07 - Let the ice cream sit at room temperature for 5 minutes before scooping and serving.