Putting the Int'l into I.F.S.

What will the wacky Tunisians think of next? When a 'pancake' is called a 'brick' you know that you should never travel to that country.  If you can guess what Mexico calls them you win this link. (I'll give you a hint, they use it to make burritos, tacos, flautas, tostadas, quesadillas, enchiladas, gorditas, chips, and chilaquiles.)