Unlike other Mexican dishes such as burritos and enchiladas, you should only be eating the filling of a tamale, since its exterior wrap is a prepared corn husk.
So, you should first unwrap this portable street food before adding any sauces, herbs, or sour cream. Continue to unwrap it as you eat through the delicious masa harina filling.
Tamales can have various fillings, like meat, cheese, chilis, or sweeter options. No matter what the filling is, don't waste your time trying to eat the corn husk wrapper.