I've completed two of the biochemical investigation duty-officer chains, Tulaberries and Unrefined Ketracel. What are the "unique consumables", what missions gives me them, and where do I get them? I've checked the ship's doctor and scientist numerous times, as well as checking the "Personal" tab incessantly, but don't see any Tulaberry or Unrefined Ketracel missions that reward anything but EC, accolade points, etc.
Assignment chain: Biochemical Investigations. Check the "Rewards" section of each individual chain. For every commodity except Shapeshifting Lockets, completing the chain unlocks a repeatable assignment that transforms 3 of the commodity into a special consumable. (With Lockets, you essentially sell them for GPL.)