Summon your Enkidu minion. That green is not coming out, even with multiple washings.
Legend has that Gilgamesh first found Enkidu while searching for a meal. Without the means to make a fire, he attempted to eat the fowl raw, only to find himself the victim of a furious counterattack. Impressed by the bird's tenacity, he promptly made him his pet.
How to obtain:
Trial -- Battle in the Big Keep