01 -  Combine mashed ube, granulated sugar, coconut milk, ube extract, and a pinch of salt in a saucepan. Cook over medium heat, stirring continuously, until smooth and slightly thickened, approximately 5 minutes. Remove from heat and allow to cool to room temperature. 
 02 -  Place pistachios, whole milk, heavy cream, honey or sugar, vanilla extract, and a pinch of salt in a blender. Blend until fully smooth. Transfer mixture to a saucepan and heat over medium-low, stirring often for 5 minutes without bringing to a boil. Remove from heat and let cool. 
 03 -  Fill ice cream bar molds halfway with the cooled ube mixture. Place molds in the freezer for 1 hour to set until firm enough for layering. 
 04 -  Top the set ube base with pistachio mixture, filling molds to the top. Insert popsicle sticks and return to the freezer for a minimum of 5 hours, or until fully solid. 
 05 -  Remove bars from molds. Optionally, drizzle each with sweetened condensed milk and sprinkle with chopped pistachios before serving.