Heat the milk in a saucepan over medium heat. Do not let it boil — just warm it until hot and steamy.
In a small bowl, mix the ube extract or powder with vanilla syrup until smooth.
Pour the ube mixture into the heated milk and whisk until it’s fully blended into a pastel purple color.
Brew your espresso or strong coffee and pour it into a serving cup.
Slowly pour the ube milk mixture over the coffee to create layers.
(Optional) Top with whipped cream and purple sprinkles for a fun finish.
Serve hot, or let it cool and pour over ice for an iced version.