Maseca Corn Flour Mix, 4.4 Pound -- 10 per case. Tortillas corn flour made from ground, dried corn. Ideal to make masa harina (dough) for tortillas, sopes and empanadas, enchiladas, pupusas, guaraches, arepas and atole. Maseca Instant Corn Masa is a product from Azteca Milling. Maseca corn flour is gluten free. shelf life 365 days