Crossword Clue:

the hard substance forming it

AnswerCrossword Clue
GRAINFiber forming the substance of wood.
DELTAIt may be forming at the mouth
GOFROMRAGSTORICHESMake it the hard way
SOTHe may find it hard to pass the bar
TOFFEECandy cooked until it reaches the hard-crack stage
EGGSACHow to score it when you bunt your hard-boiled breakfast to advance the runner?