Corn truffle folded into a fresh tortilla quesadilla is a prized Mexico City delicacy. This vegetarian street food is a healthy, fresh option with a unique, earthy umami flavor.
Heat 1 tbsp olive oil in a large skillet over medium heat. Add white onion and sauté for 2–3 minutes until translucent.
Add fresh huitlacoche and epazote leaves. Cook gently, stirring often, for 4–5 minutes until huitlacoche turns tender and moisture is released.
Season the mixture with salt and black pepper, then continue to cook until most moisture evaporates, about 2 minutes more.
Warm corn tortillas briefly on a hot skillet, turning once, just until pliable and slightly toasted (about 30 seconds per side).
Fill each tortilla with a portion of the huitlacoche mixture and Oaxaca cheese. Fold and cook on a lightly oiled skillet over medium heat for 2–3 minutes per side, pressing gently, until cheese melts and tortillas crisp.