The Compendium of Caraka 1.26.43_2

1.26.43_2

amlo raso bhaktaṃ rocayati bhaktaṃ rocayati agniṃ dīpayati dehaṃ bṛṃhayati ūrjayati mano bodhayati indriyāṇi dṛḍhīkaroti balaṃ vardhayati vātamanulomayati hṛdayaṃ tarpayati āsyamāsrāvayati bhukamapakarṣayati kledayati jarayati prīṇayati laghuruṣṇaḥ snigdhaśca /

Sour taste makes food relishable, makes food relishable, enkindles the digestive fire, nourishes the body, invigorates, awakens the mind, strengthens the senses, increases strength, directs wind downwards, gladdens the heart, causes salivation in the mouth, carries down eaten food, moistens, digests, pleases, and is light, hot, and unctuous.