Ashtangasamgraha 1.36

1.36

tridhā vipāko dravyasya svādvamlakaṭukātmakaḥ |

gurumandahimasnigdhaślakṣṇasāndramṛdusthirāḥ ||

tathā kṣīrādimadhurāṇāmupayogānmāturudakavihārācca gauratā tilānnavidāhinā kṛṣṇatā |

vyāmiśrāṇāṃ śyāmatā |

deśakulānuvṛttitaśca varṇabhedaḥ ||

koṣṭhe vibaddhe saruji pibettu parikartini ||

śucidhautopavānāni nirvalīni mṛdūni ca ||

The post-digestive effect of a substance is threefold, consisting of sweet, sour, and pungent.
Heavy, slow, cold, unctuous, smooth, dense, soft, and stable;
likewise, fair complexion arises from the use of sweet things such as milk and the mother's water sports; dark complexion arises from food of sesame and burning things;
sallow complexion arises from mixed things;
and variation of complexion arises from conformity to region and family.
When the abdomen is constipated, painful, and has cutting pains, one should drink [it].
Clean, washed, blown by the wind, devoid of wrinkles, and soft.