The Compendium of Caraka 7.2.5

7.2.5

yathoktaguṇayuktānāṃ deśajānāṃ yathāvidhi/
payaḥ puṣpe 'asya, nirvṛtte phale peyā payaskṛtā//

Grown in regions possessing the stated qualities, according to rule:
its flower in milk; when the fruit has formed, a drink made with milk;