In article >,
JC > wrote:

> Hi Everyone. When getting subs (a.k.a submarine sandwich, grinders,
> hoagies, hero's etc..) oil and vinegar are offered as a topping at all
> places. What types of oil and vinegar are normally used on sandwiches?
>
> Sorry if this is a dumb question.

Depends on the store, but plain white vinegar and corn oil are popular.
When in doubt, just ask before you place an order for a sandwich.