"Rich R" wrote:

Orvieto is a DOC in Umbria. It is made from trebbiano, verdello
and some other grapes which I am at loss for right now.

My bright little book says: trebbiano toscano (procanico),
verdello, grecchetto, canaiolo bianco (locally called drupeggio),
malvasia toscana; other local non-aromatic varieties are
permitted.

M.