Wash the bellflower roots and soak them in water.

Bellflower Root and Cucumber Salad
A recipe for bellflower root and cucumber salad that removes the bitterness and adds a sweet and sour flavor.
What You'll Need
Instructions
Cut the bellflower roots in half and peel them.
Cut the bellflower roots into bite-sized pieces.
Add 1 tbsp of coarse salt and 3 tbsp of sugar to the bellflower roots and rub them together.
Use a vegetable peeler to remove only the prickly parts of the cucumber, then slice it diagonally.
Add 1 tsp of fine salt and 0.5 tbsp of sugar to the cucumber and let it pickle.
Make the seasoning sauce by mixing 1 tbsp of soy sauce, 1 tbsp of anchovy fish sauce, 4 tbsp of vinegar, 1 tbsp of regular fine chili powder, 1 tbsp of spicy fine chili powder, 1 tbsp of minced garlic, 2 tbsp of oligosaccharide, 2 tbsp of regular coarse chili powder, and the chopped white part of the green onion.