What is orange stuff in lobster?

Chef's answer
This is called either the "roe" or the "coral." It turns orange when cooked. The green stuff inside is called the "tomalley." It's the same as the "mustard" of a crab.
Frequently asked Questions 🎓
For the crab to grow larger, it molts, or sheds its shell periodically. A molting crab is said to be a "soft-shell." Mustard: Yellowy substance found inside a cooked crab. ... She-crab: An immature female crab, also known as a "Sally.".
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