A: Biotin is a water-soluble B-complex vitamin (also called vitamin B7 or vitamin H). The primary role of biotin is in the metabolism of fats, proteins, and carbohydrates. Biotin is found naturally in food, such as yeast, cauliflower, salmon, bananas, carrots, egg yolks, sardines, legumes, and mushrooms.Biotin as a supplement has been reported to strengthen hair and improve thin, splitting, or brittle toenails and fingernails.: Biotin is a water soluble B-vitamin (B7). It is essential for good nail and hair growth. Biotin is involved the biochemical metabolism of proteins, carbohydrates and fats into energy. It also plays a part in the synthesis of fatty acids.
I assumed, and later confirmed, it was lobster roe or lobster eggs. The lobster roe is naturally black and when cooked it turns red and is called coral (toward the bottom of the picture, the roe has turned red on the far ends and is still black in the center). Because I had asked the restaurant not to cook my lobster too long, the most outside roe had turned red and the inner roe, the majority of it, was still black.
Corals, sea anemones and jellyfish belong to a group of animals called cnidarians. They have a simple body consisting of a central gut cavity surrounded by tentacles. A jelly-like substance called mesoglea lies between the outer and inner layers of the body. There are two basic cnidarian body shapes: a polyp form, which is attached to a surface; and an upside-down free-floating form called a medusa. Some cnidarians change form at different phases of their life cycle, while others remain in one form for their entire life.