Cucurucho is a sheet of paper, cardboard or wafer (cookie) rolled into a cone shape that contains different types of ice cream, sweets, candies, seeds, etc.
Cucurucho is a local delicacy of the city of Baracoa in eastern Cuba.
Wrapped in a cone-shaped palm leaf (hence the name: cucurucho - Spanish for cone or cornet), it is a mix of coconut, sugar and other ingredients such as orange, guava and pineapple.
[2] The conical container, whether cardboard or of another type, is also known as a cucurucho.
The song in question is “El manisero” (“The Peanut Vendor”), which in Spanish the lyrics say: don't go to sleep, without eating a “peanut cone” (“cucurucho de maní“).