Arachibutyrophobia

Arachibutyrophobia (from Greek arachi, "ground nut", and Greek bouturo, "butter") is the fear of peanut butter(https://en.wikipedia.org/wiki/Peanut_butter)sticking to the roof of one's mouth. Sufferers may have one drop of peanut butter for a vegetable while others may not want peanut butter at all as well as other peanut-flavored stuff like peanut sauce. The most common cause of arachibutyrophobia is choking on butter.