Add 650ml of water and '1' (sauce, beef rib, garlic, Korean radish) to the pot.

Bring to boil on high heat.
Boil additional 25~30 minutes on medium-high heat.

Add '2' (scallion) to the pot.

Boil 2~3 minutes on medium-high heat.

Add and beat '3' (egg) on a bowl.
Move the egg to the pot a stir.

Add '3' (noodle) to the pot.
Boil 30 seconds ~ 1 minute on medium-high heat.