For the Dan Dan sauce:

For the noodles:

Put a large pot of water to boil with salt. Cook the noodles as per the instructions on the packet. Drain and set aside. Reserve 1/2 cup of the noodle liquid to loosen the Dan Dan sauce if required.

For the topping:

To make perfect soft-boiled eggs, drop the egg in boiling water for 6 mins. Remove and place in ice cold water.
Assemble by putting the noodles in 4 bowls and placing carrots and spinach on top of each bowl equally. Sprinkle it with salt.
Then add the Dan Dan sauce (add hot noodle liquid until desired consistency), soft boiled eggs and garnish with spring onions, crushed peanuts, lime wedges.
Serve hot.