The retailer's Christmas Pleasure on a Plate index is based on adults' rating of products depending on how moreish, gratifying and healthy they are, as well as their expense and how nostalgic they make people feel.
It put carrots top ahead of potatoes, with turkey third. Parsnips came sixth and Brussels sprouts, ninth. Women rated vegetables higher, while men showed greater preference for meat.
Michelin-starred chef Michael Caines said: "Carrots are a wonderfully versatile vegetable and I've always loved cooking with them. I can't wait for the carrot to take centre stage on the dinner table this Christmas."