1Soak the Manila clams in cold, salted water for at least 30 minutes to encourage them to expel any sand, then rinse thoroughly under cold running water.
2In a small bowl, combine the Light soy sauce, Oyster sauce, Sugar, White pepper, and 30 grams of Water. In a separate small bowl, mix the Cornstarch with the remaining 20 grams of Water to create a slurry.