01 - In a saucepan over medium heat, combine diced pineapple, granulated sugar, and lemon juice. Cook for 5 minutes until pineapple is softened and sugar fully dissolves. Remove from heat and cool to room temperature.
02 - Transfer the cooled pineapple mixture to a blender or food processor and process until completely smooth.
03 - In a large bowl, whisk together heavy cream, whole milk, vanilla extract, and salt until well combined. Stir in the pineapple puree until fully incorporated.
04 - Cover the bowl and refrigerate the mixture for a minimum of 2 hours to ensure thorough 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 tightly, and freeze for at least 4 hours or until firm.
07 - Allow the ice cream to sit at room temperature for 5 minutes to soften slightly before scooping and serving.