Crossword Clue:

Its most useful when cracked

AnswerCrossword Clue
EGGIt's most useful when cracked
WHIPIt's most useful when it's cracked
BRONCOIt's most useful when it's broken
JOKEIt's best when cracked
CODEWhen it's cracked, it's broken
CODEWhen it gets cracked, it's broken