Clean the clams thoroughly under running water. If needed, soak them in light saltwater covered with a dark cloth to remove impurities.

Slice the green onion and chili pepper into small pieces. Prepare garlic by peeling and crushing it.

In a pot, add water and clams. Bring to a boil over medium heat.

Once the clams open, add garlic and chili pepper. Simmer for a few minutes.