01 - Combine fresh pineapple, granulated sugar, and lemon juice in a saucepan. Heat over medium for 5 minutes, stirring, until pineapple is softened and sugar has dissolved. Remove from heat and allow to 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 well combined. Gently fold in the pineapple puree.
04 - Cover the bowl and refrigerate the mixture for at least 2 hours to ensure thorough chilling.
05 - Pour the cold mixture into an ice cream maker and churn according to manufacturer’s instructions, typically 20 to 30 minutes, until the ice cream is 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 - Let the ice cream stand at room temperature for about 5 minutes to soften slightly. Scoop and serve immediately.