Add oil to a sauce pan (or a wok) and heat over medium heat until wam. Add 2 in length julienned green onions. Cook and stir until the green onions turn brown. Remove the green onions with a pair of tongs and place in a bowl, save for later. If you are using pre-made scallion oil, heat oil over medium heat until warm.

!! Make separte sauce for KT using gluten free soy sauce, and no need for different soy sauce if unable to purchase dar soy.

Add light soy sauce, dark soy sauce, and sugar into the pan with the scallion oil. Cook until it starts to simmer. Stir to mix well and turn off heat.

Bring a large pot of water to a boil. Cook noodles according to instructions. Don't overcook, it will be soggy. Once cooked, drain noodles and transfer to serving plates.

To serve the noodles alone, add a few spoonfuls of the noodle sauce into each serving bowl and garnish with fried green onions. Serve the noodles with the rest of the sauce on the side. Mix the noodles with sauce before eating. Add more sauce if needed.

To serve the noodles with a topping, add a few spoonfuls of the noodle sauce into the noodles, mix well with a pair of tongs. Taste the noodles and add more sauce if needed. Transfer noodles into each serving bowl and add the topping (see recipe below). Serve with the rest of the toppings on the side.

!! You can use homemade noodles, egg noodles, ramen noodles, or udon noodles in this recipe.

https://omnivorescookbook.com/scallion-oil-noodle/