I think by pearls of wisdom you mean the Pearl of Great Price, but that was really just a supplement to the Old Testament, expounding on Moses and their belief of the creation.
Members of the Church of Jesus Christ were commanded not to drink hot drinks, interpreted by prophets as coffee and tea. Members recently have, when asked why, claimed their teachings were that they were to abstain from caffeine because the caffeine is addictive and that's why Coffee was bad. However, this was and has never been the doctrine. The doctrine was purely to abstain from coffee and certain types of tea, as the "hot drinks" in the book of the Doctrine and Covenants that has been interrpreted by modern-day prophets. Never has a prophet established that caffeine is the culprit for the reason for abstaining, infact, the same book also establishes that God has only given commandments for the purposes of spirituality, rather than mortality. But because of the member-spread tradition, many members have believed--falsly--that they had been taught to abstain from caffeine and therefore also abstain from chocolate. This has never been the case, but has merely been member tradition and has unfortunately spread as what their church teaches. The doctrine of the church is relatively simple, but you have to sift member traditions (such as being republican, or not drinking caffeine, or not letting their children play with non members, or not being able to gamble, or not being able to consume caffeine, or being homophobic) from the teachings of the Church, which is to have Faith in Jesus Christ, repent, be baptized, receive the Holy Ghost, and Endure to the end.
The more fitting name I've seen him called is Yittler