Soak the soybeans thoroughly.
Boil the soaked soybeans and let them cool.
Blend the boiled soybeans, water, and nuts in a blender until smooth.
Chill the blended soybean broth in the refrigerator.
Boil the somyeon (thin wheat noodles) and rinse them in cold water.
Place the cooked noodles in a bowl and pour the chilled soybean broth over them.
Add toppings such as cucumber and tomato, and season with salt.