Taste the grain first. If it has a stale or other off flavors, dont waste your time. Barley should taste well nutty, malty, grainy with some tannin's from the husk. Your extraction rate might be a tad lower too. The hops are a bigger crap shot due to time and temps. Sealed bags might be ok. Give them a smell, they should be very hoppy opening. You could bring them by someone with brewing experience and get a better opinion. Good Luck scrawbag