Spangler said the Necco wafer recipe has remained “essentially unchanged,” though fans may detect a richer cocoa flavor in the chocolate wafers.

Ethel M Chocolates, a Henderson, Nev.-based subsidiary of Mars, Inc., and maker of premium gourmet chocolates, has revived the beloved classic Mars Bar under its label.

M&M’S celebrated Thursday with a throwback: M&M’S Crispy Milk Chocolate Candies. The brand announced the popular product will return to shelves in January after a 10-year hiatus.