Step 1: Recall a well known fact often used in general awareness, Darjeeling Tea is famous as India's very first GI-tagged product.
Step 2: Basmati rice and Gobindo Bhog rice were tagged much later, and cardamom is not the item usually cited as the first GI registration.
Step 3: Matching the "first GI tag" fact to the product it is always associated with gives the answer directly. \[\boxed{\text{Darjeeling Tea}}\]