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. Allow mixture to cool to room temperature.
02 - Transfer cooled pineapple mixture to a blender or food processor. Process until completely smooth.
03 - In a large bowl, whisk together heavy cream, whole milk, vanilla extract, and salt until fully combined. Add pineapple purée and mix thoroughly.
04 - Cover bowl and refrigerate mixture for at least 2 hours until well chilled.
05 - Pour chilled mixture into an ice cream maker. Churn according to manufacturer’s directions, usually 20 to 30 minutes, until thick and creamy.
06 - Transfer ice cream to a freezer-safe container. Cover and freeze for a minimum of 4 hours or until fully set.
07 - Allow ice cream to sit at room temperature for about 5 minutes before scooping for easier serving.