Purge the jaecheop clams and wash them thoroughly.
Finely chop the garlic and onion.
Sauté the garlic and onion in a pan with olive oil.
Add the jaecheop clams, sauté, then pour in white wine (or cooking rice wine) and let it simmer briefly.
Pour in boiling water and simmer to extract the broth.
Season with salt and pepper.
Sprinkle parsley on top and serve.