Cut white chocolate into small chunks.
Add 250ml of seed milk and chopped white chocolate to a medium-sized pan. Heat on medium heat while whisking occasionally until chocolate is fully melted and add a pinch of salt.
Separately, add the cornstarch to a small bowl. Slowly add 50ml of seed milk and whisk vigorously to form a perfectly smooth mixture. Ensure no lumps are left.
Add your cornstarch mixture to the chocolate mixture. Keep the heat set to medium and stir from time to time while waiting for the mixture to thicken up, once thickened, add vanilla extract, cinnamon and mixed spice.
Once mixed in, remove from the heat, pour into cups and sprinkle with toppings of your choice.