Corn Smut

I love this stuff! Here is wikipedia's entry:

 Corn smut is a disease of maize caused by the pathogenic plant fungus Ustilago maydis. U. maydis causes smut disease onmaize (Zea mays) and teosinte (Euchlena mexicana). Known in Mexico as huitlacoche, it is eaten, usually as a filling inquesadillas and other tortilla-based foods. 

Virginia Tech has more infor: http://pubs.ext.vt.edu/450/450-706/450-706.html

Here is a recipe to try. I even found one for Corn Smut ice cream. Goya had canned corn fungus which might be worth trying. 

Cuitlacoche with Corn and Zucchini
2 tablespoons of safflower, peanut or olive oil
3 cloves of garlic finely chopped
½ medium onion finely chopped
2 ears of corn - shucked
1 ½ pounds of maize mushrooms
10 leaves of fresh sage lightly chopped
2 chile poblanos - roasted, seeded and peeled
4 small zucchinis thinly sliced

Saute the garlic and onion until transparent. Add the corn and zucchini until slightly soft. Add the Maize Mushroom and fresh sage until mixture is well blended and liquid is evaporated. Add salt to taste. Garnish with Chile poblano. This recipe can be used as a wonderful filling for an egg dish.