The Compendium of Caraka 1.1.107

1.1.107

prāyaśo madhuraṃ snigdhaṃ śītaṃ stanyaṃ payo matam /
prīṇanaṃ bṛṃhaṇaṃ vṛṣyaṃ medhyaṃ balyaṃ manaskaram //

Milk, like mother's milk, is generally considered sweet, unctuous, and cool;
pleasing, bulk-promoting, virilific, promoting intellect, strengthening, and invigorating to the mind.