OK, so after further thought I decided on something interesting... I found some weird Celestial Seasonings that has the flavor of sugar cookies.
Yes, sugar cookies.
Its ingredients consist of roasted barley, vanilla, orange peel and milk thistle. It's flavor (as a tea) is subtle but delicious.
In Papazian's book, he has a recipe for a beer with another Celestial Seasonings tea... I figure that adding 2 oz. to the end of the boil for my mild will work.