Kazan Cathedral, located in Saint Petersburg, is a monument of immense historical and cultural significance. However, the cathedral itself isn't directly associated with a specific food history, since it's primarily a place of worship and not a culinary destination. The food traditions related to Kazan Cathedral would be more about the regional cuisine of Saint Petersburg. Russian cuisine has evolved over centuries, influenced by the rich cultural tapestry of the nation and the diverse climates and resources. Foods like borscht (soup), blinis (thin pancakes), and pirozhki (stuffed buns) are staples of the broader Russian food heritage and are frequently enjoyed by visitors and locals alike.
Please note that dining experiences at specific restaurants around the cathedral vary and might have additional meat-free or religious dietary options available for visitors.