Per serving: Onion 25g, Peppers 10g
Wash the chili peppers thoroughly and remove excess water.
Make slits in the peppers and set aside.
Add soy sauce, vinegar, sugar, and water to a pot and bring to a boil.
Let the boiled marinade cool, then pour over the peppers placed in a jar.
Let it marinate at room temperature for a day, then store in the refrigerator.