In a saucepan, combine water and cornstarch, then mix well until fully dissolved.
Heat the mixture on medium heat until it starts to boil and turn to low and simmer for about 3-5 minutes just until it thickens like syrup.
Remove the pit from the avocado.
In a large mixing bowl, put the powdered milk and sugar.
Pour boiled cornstarch into the large mixing bowl with powdered milk and sugar.
Stir until sugar is fully dissolved.
Pour the fresh milk and condensed milk into the mixture and stir until the milk is dissolved.
Scraped the avocado meat and add into the mixture.
Add the vanilla extract (optional) and stir.
Using a funnel and a ladle, pour the mixture into each ice candy wrapper about 3-4 inches high. If you don’t have a funnel you can use a pitcher. Fill, twist and knot the top tightly to avoid leakage.
Place the wrap Ice Candy into the freezer and freeze it overnight.