Boil the noodles: Add the ramen noodles and simmer for 2 to 3 minutes until they are barely soft after bringing around 2 cups (500 ml) of water to a boil. After draining, set away. (If you want a looser texture, save aside 1 to 2 tablespoons of cooking water.)
Whisk the eggs: Combine 4 big eggs, 2 tablespoons milk (or water), 1 tsp soy sauce, a touch of salt and pepper, and a whisk in a bowl.
Sauté aromatics & veggies: In a nonstick skillet, heat 1 tablespoon of butter or oil over medium heat. Add the mixed veggies and the sliced scallions; cook for 1 to 2 minutes, or until the vegetables are tender.
Cook the eggs: Lower the temperature to medium-low. To make soft curds, pour the egg mixture into the pan, let it set for a few seconds, and then gently stir and fold. Eggs will continue to set off heat, so cook until they are just barely runny.
Add noodles: To the pan with the eggs, add the drained noodles. If using, drizzle with 1 tsp sesame oil and toss to mix. If necessary, loosen with a little soy sauce or the saved noodle water. Avoid overcooking the eggs by only heating the noodles for a short while.
Finish & serve: To the pan with the eggs, add the drained noodles. If using, drizzle with 1 tsp sesame oil and toss to mix. If necessary, loosen with a little soy sauce or the saved noodle water. Avoid overcooking the eggs by only heating the noodles for a short while.