Día de los Muertos conquers the grocery aisle

Does it matter if your pan de muerto comes from Walmart or Amazon?

There are as many types of pan de muerto—the “bread of the dead”—as there are ways to live and die.

The seasonal pan dulce, which is used to honor late family members and friends during annual Día de los Muertos celebrations, varies greatly depending on local and regional customs. In the bakeries of Oaxaca City in southern Mexico, for instance, there’s …