Clean the freshwater snails thoroughly.
Chop zucchini, onion, chili pepper, and green onion into small pieces.
Add soybean paste and water to a pot and bring to a boil.
Add the cleaned snails and chopped vegetables, then simmer.
Stir in minced garlic and red chili paste, then boil once more.
Finish by drizzling perilla oil and sprinkling sesame seeds.