To link the Aadhaar card with the ration card, one has to go to the official website Food & Supplies Department - Government of West Bengal (wb.gov.in). Then search for the option link ration card to aadhaar. Enter the required information and then click on the ‘Submit’ tab.  One can contact the department to link the Aadhaar card with the ration card. For this, one needs to carry the original copies of both the Aadhaar card as well as the ration card.