"To cause the face to appear in a mass of flame make use of the following: mix together thoroughly petroleum, lard, mutton tallow and quick lime. Distill this over a charcoal fire, and the liquid which results can be burned on the face without harm"

This quote by Harry Houdini is referring to a method of developing a flame result on the face without causing any damage. The method involves mixing together petroleum, lard, mutton tallow and fast lime and then distilling the mix over a charcoal fire. The liquid that is produced can then be burned on the face without triggering any harm. This technique is most likely used in phase performances or other theatrical productions to create a dramatic result. It is essential to keep in mind that this approach must just be utilized by skilled professionals as it can be dangerous if not done properly. It is also important to utilize the proper materials and to follow the guidelines thoroughly in order to ensure safety.