Boil the milk: Pour the milk into a medium saucepan and place it over medium heat. Heat until it just starts to boil, around 6 minutes, stirring occasionally to prevent a skin from forming on top.
4 cups milk
Cook the vermicelli: Add the vermicelli to the boiling milk. Stir immediately to separate the pasta and prevent clumping. Reduce the heat to low or medium-low and let it simmer for about 4 minutes, stirring gently from time to time. The pasta should be tender but not mushy.
3.5 oz vermicelli pasta
Sweeten and flavor: Turn off the heat. Add the sugar and orange zest, stirring well so the sugar dissolves and the zest is evenly distributed.
2 tablespoon white sugar, 1 teaspoon orange zest
Rest and cover: Cover the saucepan and let the mixture sit for 10 minutes. This allows the vermicelli to fully absorb the milk and thicken slightly. Serve warm, or let it cool slightly if you prefer.
Video
Notes
Break the vermicelli into small pieces before cooking.
Stir often to prevent the vermicelli from sticking to the bottom of the pot or clumping together.
The 10-minute rest after cooking is vital for the noodles to fully absorb the milk