According to Bodhayana Dharma Sutra 220.127.116.11:
- Now (the customs peculiar) to the north are, to deal in wool, to drink rum, to sell animals that have teeth in the upper and in the lower jaws, to follow the trade of arms, to go to sea.
And the footnote for that Sutra says:
The first two customs mentioned still prevail in the north, especially in Kasmîr, where Brâhmanas commonly deal in wool and woollen cloth. Spirituous liquor is not now drunk openly, but its use is sanctioned in the Kasmîrian Nîlamata-purâna. Many Brâhmanical families in the north, especially in the North-western Provinces, subsist by enlisting as soldiers in the British and native armies.
Where does the Kashmiri Nilamata Purana sanction consumption of alcohol?
Also, the footnote for Sutra 5:
A similar argument is given by the Kasmîrians for the lawfulness of the consumption of meat, which they justify by a desaguna or 'virtue of their country.'