Raw, adjective: 2. not having undergone processes of preparing, dressing, finishing, refining, or manufacture: raw cotton.
verb, unravel [anˈrӕvəl]
1 to take (e.g. string, thread etc) out of its tangled condition; to disentangle; She could not unravel the tangled thread.
2 (especially of a knitted fabric) to undo or become undone; My knitting (got) unravelled when it fell off the needles.
3 to solve (a problem, mystery etc); Is there no-one who can unravel this mystery?