El Pedregal, a heavenly farm based restaurant

The one and only! All breakfasts (such as egg scrambles or carne asada) come with bread, tortillas, jam, crema, queso fresco, black beans, chile sauce, pickled jalapenos and carrots, porridge....

...and duck butts.
They serve breakfast all day and supposedly their lunches are equally big and delicious. Our breakfast was about Q40/person, or $5.50/person. They're located near Tecpan down a little road near a nursery.