Would write to Union commerce minister Sharma in this regard
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/declare-tea-national-drink-says-montek
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/economic-times-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/planning-commission
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/assam
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tea
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture