01 - Combine diced pineapple, granulated sugar, and lemon juice in a saucepan. Cook over medium heat for 5 minutes until the pineapple softens and sugar is dissolved. Remove from heat and cool to room temperature.
02 - Transfer the cooled pineapple mixture to a blender or food processor and blend until completely smooth.
03 - In a large bowl, whisk together heavy cream, whole milk, vanilla extract, and salt until evenly blended. Gently stir in the pineapple puree until combined.
04 - Cover the bowl and refrigerate the mixture for at least 2 hours to ensure it is well chilled.
05 - Pour the chilled mixture into an ice cream maker and churn according to the manufacturer’s instructions, typically for 20 to 30 minutes, until the texture is thick and creamy.
06 - Transfer the churned ice cream into a freezer-safe container, cover securely, and freeze for at least 4 hours or until set and firm.
07 - Allow the frozen ice cream to rest at room temperature for 5 minutes for easier scooping, then serve immediately.