Combine the ube halaya, extract, milk, salt and sweetened condensed milk until homogenous. If you want to make it a little frothy, you can use a whisk, blender, or even shake in a jar. Refrigerate the ube milk until ready to use.
Pull an espresso shot (I use a Moka pot for this).
Fill a tall glass half full with ice. Add the ube milk. Holding a spoon so that the lip is at a 45 degree angle pointing down against one of the walls of the cup but isn't touching the ube milk, pour the espresso slowly into the spoon so that it floats on top of the ube latte.
Take your pictures with the layered drink, then stir before enjoying.