I'm a former chef who shops for 2 at Costco. Here are 11 foods I get there that feel gourmet. As a trained chef, some of the best items I get at Costco include the Kirkland Signature chicken breasts and Kerrygold Irish Butter. https://www.businessinsider.com/best-gourmet-feeling-costco-items-trained-chef-gets-2024-8