What visual cue indicates that lobster meat has not finished cooking?

Answer

It retains a clear or glassy look

The most definitive visual indicator that lobster meat remains undercooked is its degree of translucence. Raw muscle fibers contain proteins that are relatively transparent. As heat is applied, these proteins must fully denature and coagulate, which causes them to unfold and then link together. This process scatters light, resulting in the characteristic solid, opaque white appearance of properly cooked meat. If any section, particularly the thick center of the tail or near joints, still exhibits a clear, glassy sheen, it signifies that the protein coagulation is incomplete, meaning the meat requires further application of heat to achieve proper structure and texture.

What visual cue indicates that lobster meat has not finished cooking?
cooklobstertexture