Soak the cleaned soybeans in water for at least 8 hours.
Boil the soaked soybeans in boiling water for about 10 minutes.
Remove the skins from the boiled soybeans and rinse with cold water.
Blend the soybeans and cold water in a blender until smooth.
Cook the somyeon noodles and rinse them in cold water to prepare.
Place the somyeon noodles in a bowl and pour the soybean broth over them.
Top with julienned cucumber, cherry tomatoes, salt, and other desired toppings to finish.