What visual cue indicates the lobster shell is properly cooked?

Answer

The shell turns a bright, vibrant red.

While internal temperature is the most precise metric, visual indicators provide immediate feedback during the cooking process. A key external sign that the lobster has been subjected to sufficient heat is the transformation of its shell color. A live lobster's shell, irrespective of its initial color (like green or brown), transitions into a bright, vibrant red hue once it has achieved the necessary thermal state corresponding to doneness.

What visual cue indicates the lobster shell is properly cooked?
foodlobstertexture