Manava Dharmashastra 3.232-233

At a (sacrifice in honour) of the manes, he must let (his guests) hear the Veda, the Institutes of the sacred law, legends, tales, Puranas, and Khilas.

Himself being delighted, let him give delight to the Brahmanas, cause them to partake gradually and slowly (of each dish), and repeatedly invite (them to eat) by (offering) the food and (praising) its qualities.