01 - In a saucepan, combine mashed ube, granulated sugar, coconut milk, ube extract, and salt. Cook over medium heat, stirring constantly, until the mixture becomes smooth and slightly thickened, about 5 minutes. Remove from heat and allow to cool to room temperature.
02 - Add pistachios, whole milk, heavy cream, honey or sugar, vanilla extract, and salt to a blender. Blend until silky smooth. Pour the mixture into a saucepan and heat gently over medium-low, stirring frequently, for about 5 minutes without boiling. Remove from heat and cool.
03 - Pour the cooled ube mixture evenly into popsicle molds, filling each halfway. Freeze for 1 hour until the layer is firm enough for the next addition.
04 - Pour the cooled pistachio mixture on top of the frozen ube base, filling molds to the top. Insert sticks securely. Freeze molds for a minimum of 5 hours or until fully solid.
05 - Unmold ice cream bars carefully. Optionally, drizzle each bar with sweetened condensed milk and finish with chopped pistachios prior to serving.