Collard greens braised to melting softness in the Southern style (slow-simmered with plenty of pork) are truly delicious, but the greens don't actually have to cook for hours. In twenty minutes they'll be just tender.
The robust flavors of Hoppin' John call for an equally assertive wine. Go for a brash, full-bodied red zinfandel from California. Its spicy blackberry richness is easily up to the task.