Substitute for dry vermouth

Vermouth is good for keeping.around, and not much else, to my mind. If your intended result is savory, I would go with a nice, not oaky, medium-sweet white wine. If you are preparing a sweeter dish, I would think a nice Port could work, but use less. To me, vermouth is odd outside of a martini.

Really depends upon what recipe you need it for. More info?

I usually use dry white wine or dry sherry. Depending on the dish, you can also use Marsala or even port.