What is Crackle candy? Crackle Candy is an old fashioned candy that is airy textured, light and sweet with a crisp crunch at first bite. Then, the candy melts in your mouth.  A molasses flavored candy, also called seafoam, honeycomb, sponge and molasses puff candy. Packed in a 5 ounce bag and available as plain (undipped) or coated in either Milk Chocolate or Dark Chocolate.