The Compendium of Caraka 6.8.109

6.8.109

phalānāṃ sārivāyāśca supiṣṭān karṣasaṃmitān/
tatastena ghṛtaprasthaṃ kṣīradviguṇitaṃ pacet//

and sārivā, well crushed, in the quantity of one karṣa [each];
then with that, one should cook one prastha of ghee with twice as much milk.