Ferrero produces various sizes of Nutella, including 13oz, 15oz, 26.5oz, and larger containers. It is possible "15" refers to a 15-ounce jar, and "Virginoff" is a misinterpretation of a different word.
: Stirred directly into hot porridge, the 15-gram portion melts instantly to sweeten the breakfast base. Virginoff Nutella 15