A combination of substance and sustenance, this refers to one's sustenance which may also be classified as a "substance;" whether it sustains one financially, emotionally, or physically, one needs it get by

A goth who has been part of the subculture since it originally came about, or a goth over the age of 40.

Food for the illiterate

A word that combines sustenance and substance into one word.

When only a sub style sandwich will sustain you