Reduce the blended peppers thoroughly before frying. Removing their excess moisture gives Ayamase its concentrated flavor and prevents the finished stew from becoming watery.
The sauce naturally darkens as it fries in the bleached palm oil. Cook it patiently over moderate heat until the oil rises, but avoid scorching the peppers or fermented locust beans.
For safety, bleach palm oil only in a completely dry, heavy pot with good ventilation. Never introduce water into hot oil, never leave it unattended and allow it to cool before uncovering.