Place the hulled and quartered strawberries in a small pot with the water and piloncillo. Cook over medium heat for about 10-15 minutes, or until soft and jammy. Place strawberry mixture into blender and blend until smooth.

Heat the milk and cinnamon stick in a small pot over medium heat, taking care not to burn the milk.

Add the corn flour/masa harina to the milk, whisking vigorously to avoid lumps. Strain the strawberry mixture through a fine mesh strainer into the pot.

Bring to a simmer. Reduce heat to medium-low and cook, whisking frequently, for about 30 minutes or until the mixture coats the back of a spoon. Remove the cinnamon stick and serve.