Manava Dharmashastra 3.123

3.123

pitṝṇāṃ māsikaṃ śrāddham anvāhāryaṃ vidur budhāḥ
tac cāmiṣeṇā kartavyaṃ praśastena prayatnataḥ //

The wise call the monthly funeral offering to the manes Anvaharya (to be offered after the cakes), and that must be carefully performed with the approved (sorts of) flesh (mentioned below).