[Heber J. Grant]
In your letter of March 21 you ask if the use of coffee substitutes, such as fig-co, postum and cocoa is contrary to the advice given in the Word of Wisdom?
As I understand it these drinks do not create an appetite for themselves, and when not used to excess or taken too hot are not contrary to the Word of Wisdom, and so far as I know there is no stimulant in them such as is the case in ta and coffee. When I am traveling on the train, as I do not like the milk that is served on the diner, I drink postum. When I am at home one of my favorite drinks is made from roasted barley.
[Heber J. Grant, Letter to Francis M. Whitworth, as quoted in Minutes of the Apostles of The Church of Jesus Christ of Latter-day Saints, 1910-1951, Privately Published, Salt Lake City, Utah 2010]