The Compendium of Caraka 6.13.16

6.13.16

kṣunnāśaḥ svādvatisnigdhagurvannaṃ pacyate cirāt/
bhuktaṃ vidahyate sarvaṃ jīrṇājīrṇaṃ na vetti ca//

Loss of appetite; sweet, overly unctuous, and heavy food digests slowly; / whatever is eaten causes a burning sensation, and one does not know whether it is digested or undigested;