Within the Tibetan tantric system of protection, ruels are supreme when all else has failed. They are extremely effective against persistent harm caused by spirits, curses and black magic and will protect the virtuous from the most malevolent spells.
Traditionally made once every ten years, ruels contain more than 90 ingredients and are extremely rare and difficult to come by. The energies of fierce and protective deities such as Yamantaka and Dorje Shugden are sealed within the ruels through extensive prayers and rituals for three consecutive nights by only the most senior and advanced members of the monastic community.