"Some of the practices given in the alchemical texts are merely chaff to hide the true nature of the techniques and its hidden wheat. Several words commonly used in alchemy are codes for sexual ideas… The Athanor is usually described as a special type of oven used to slowly heat the material with which you are working. According to sex magicians it means the penis. The Serpent is said to be a result of heating a substance in the Athanor. To a sex magician it is the semen. The Blood of the Red Lion is also semen. The Curcurbite, a type of alchemic container, is the vagina. So, too, is the Retort, which is usually described as another type of alchemical container. The Menstruum or Menstruum of the Gluten is the result of the slow heating of a substance in the Athanor. Sex magicians believe it to be either the female lubricating fluids or ejaculatory fluids or both, depending upon the sex magician you talk with. The First Matter is described as a mixture of the Serpent and the Menstruum… Finally the Amrita or Elixir is defined as 'the transmuted First Matter.'"
"Outer Alchemy is a form of sex magick that works with the energy systems of the body and magically charges substances which are outside the body part of the time. Inner Alchemy keeps all the forces within the body and uses the force of magickally directed sexual excitation to strengthen and empower the psychic energies of the body... sometimes called 'Tantra Yoga' or 'Kundalini Yoga...'"
(Donald Kraig, Modern Magick, Lesson 10, pgs 436-445)