Here's why:
* Direct Object: The direct object is the thing that receives the action of the verb. In this case, the direct object is "burritos".
* Indirect Object: The indirect object is the person or thing that benefits from the action of the verb. It typically answers the questions "to whom?" or "for whom?"
The sentence doesn't tell us who benefits from the restaurant having burritos on the menu. It simply states a fact.