Boil 1 serving of somen noodles in a pot of boiling water until cooked.

While the noodles are boiling, prepare the bibim sauce by mixing gochujang, sugar, chili powder, soy sauce, and plum extract in a bowl.

Drain the cooked noodles and rinse under cold water to cool. Remove excess water.

Julienne the cucumber and apple for garnish.

In a mixing bowl, combine the noodles with the prepared sauce and 2 tbsp sesame oil. Mix well.

Transfer the mixed noodles to a serving bowl. Top with young radish kimchi, julienned cucumber, julienned apple, and 1/2 boiled egg.