Heat 1 cup full fat milk in a deep pan on medium flame.
Once the milk heats (around 2 mins later), reduce the flame to low.
Add 1/4 cup of dark chocolate chips to the milk.
Start stirring the milk in order to dissolve the chocolate chips.
Once the chocolate chips begin to melt, add 1 tsp red food color.
Make sure the red color is good quality.
Stir everything together until the chocolate chip melts completely.
If you want, you could add 1 tbsp sugar for sweetness.
Bring it to a boil and then transfer it to a cup and serve.Add marshmallows for garnishing.