Soak corn husks in warm water until soft, then drain
Prepare the filling of your choice and set aside
Beat lard or shortening until fluffy
Mix masa harina, baking powder, and salt in a bowl
Add broth gradually and beat until a soft dough forms
Spread a thin layer of masa onto each corn husk
Add filling in the center of the masa
Fold the sides of the husk toward the center
Fold the bottom of the husk upward
Arrange tamales upright in a steamer
Add water to the steamer without touching the tamales
Cover and steam until the masa is firm and pulls away from the husk
Let tamales rest before serving