01 - Combine pineapple, granulated sugar, and lemon juice in a saucepan. Cook over medium heat for 5 minutes, stirring occasionally, until fruit softens and sugar dissolves. Remove from heat and cool to room temperature.
02 - Transfer the cooled pineapple mixture to a blender or food processor and blend until smooth.
03 - In a large bowl, whisk together heavy cream, whole milk, vanilla extract, and salt until evenly combined. Stir in the pineapple puree until thoroughly incorporated.
04 - Cover 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 appliance instructions, typically 20 to 30 minutes, until thick and creamy.
06 - Transfer churned ice cream into a freezer-safe container. Cover and freeze for at least 4 hours or until the texture is firm.
07 - Allow the ice cream to sit at room temperature for 5 minutes before scooping for optimal creaminess.