Bioengineering Key (Bio Key)

Bioengineering Key Quest

Enter the dark and dank Britain sewer system, located in the center of the city, then down a ladder

Kill the rats and other pests in the sewer system and collect the organic material. The king will reward you for cleaning up the city and removing the vermin.

There is Stone Vendor at the entry of the Britain Sewers that will give you various rewards for the organics you collect