“Recently I was introduced to a South American drink known as Yerba Mate. I was assured that it was not against the WoW and that it was an herbal tea (I personally drink herbal teas quite frequently). I have researched it as thoroughly as I possibly can and do not believe it to be against the Word of Wisdom. But a close friend of mine recently returned from a mission in South America and was says he was told it was against the Word of Wisdom by his mission president.” (Roy)
Based on the modern interpretation of the Word of Wisdom and my limited understanding of Yerba Mate, I do not believe it is against the word of Wisdom. It is not coffee, alcohol or made from the Camellia sinensis bush.
This mission president may have made the assumption that since Yerba Mate contains caffeine, it is against the Word of Wisdom. This is an incorrect deduction.
Drink away, mate.
