def update_status_to_ready(self):
        """
        Updates the object state to *ready* and adds a button press event for
        the user to proceed to the *food in* state.
        """

        self.state = self.STATE_READY
        self.add_button_event(self.BUTTON_ENTER, self.update_status_to_food_in)
        self.write("Add food and press enter to continue")