I was going through my freezer the other day and found a bag of cracked black roasted grain, about two years old and stored in a tin. Would it still be any good? What happens to grain in this sort of situation?
If you needed some I am sure it would be fine for a colour adjustment but depending on how much there was I would just dump it. $1 or $2 worth of black or roast who cares.
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I think I'm really with SJW and Homebrewer. Since it's cracked and that old I'd be inclined to chuck it out. If you really want to use it, give it a taste. You don't want it to be mouldy tasting but it might be hard to tell through the acrid black malt taste.