Instructions: In a saucepan, combine heavy cream, whole milk, and granulated sugar. Heat over medium heat, stirring until sugar dissolves and mixture is warm. Remove from heat. In a bowl, whisk egg yolks. Slowly pour warm cream mixture into yolks, whisking constantly to temper the eggs. Return mixture to saucepan and cook over medium heat, stirring constantly, until it thickens slightly and coats the back of a spoon, about 5-7 minutes. Do not boil. Remove from heat and whisk in white miso paste until fully incorporated. Strain mixture through a fine-mesh sieve into a clean bowl. In another saucepan, combine water and brown sugar. Cook over medium heat, stirring occasionally, until sugar dissolves. Add butter to the sugar mixture and cook, stirring constantly, until it turns a deep amber color, about 5 minutes. Slowly whisk in the miso custard mixture until smooth. Stir in vanilla extract and a pinch of salt. Let cool completely. Transfer cooled mixture to an ice cream maker and churn according to manufacturer's instructions until it reaches a soft-serve consistency. Transfer churned ice cream to a container and freeze for at least 4 hours or until firm. Serve scoops of miso caramel ice cream and enjoy!