I have a sprig of rosemary that came from the Garden of Gethsemane. And I have a friend who has some water from the Shrine of Fatima.

If I made an herbal tea with my rosemary and his Fatima water, would it be a doubly holy substance, more potent than either of those items alone?

Does it work that way?

...Somebody (not me) is bound to market a product along these lines sooner or later, so I thought I'd ask.