It's grey/black, it's fungus (think mushroom) and it tastes like sweet earthy corn flavored mushrooms. The farmers around here think I'm nuts, it's called corn smut and is essentially a major pest. I have one corn farmer that shows up with huit and hands it to me at the beginning of market. I keep telling him the return on selling huit is a whole lot more than selling corn......he still shakes his head and thinks I'm nuts. Aw well.