Madya means “wine” and what we are talking about when we talk about wine in this case is the grape. Grapes and wine are very symbolic in many traditions. Wine is a symbol of the blood of the Christ, a symbol of that fire or that energy we need in order to sustain ourselves. In the terms of Madya, this Sanskrit term, what we are talking about is the vibration of that Solar Light which manifests through the tattva of Vayu, which we know of as Air. So, the Alchemist or Tantrika consumes the grape or grape juice and does so in order to receive the purest and most potent hydrogens related to the tattva Vayu. That pure energy is consumed as part of the process of transforming the energies of the organism in order to produce the purest and most potent sexual energy, which in turn becomes the foundation stone of the temple of the soul.
Isaiah 43: 1-3
But now thus saith Iod-Havah that created thee, O Jacob (Tiphereth), and (by means of sexual alchemy) formed thee, O Israel, Fear not: for I have redeemed thee, I have called thee by thy name; thou art mine. When thou passest through the waters (of Yesod), I will be with thee; and through the rivers (of Eden), they shall not overflow thee: when thou walkest through the fire (of Hod), thou shalt not be burned; neither shall the flame kindle upon thee. For I am Iod-Havah your Elohim, the Holy One of Israel, (Jesus) thy Savior.
Genesis 1:2
The letter Aleph of אל El represents air or the Spirit and the (ראש Rosh) crown of El is Elohim (who is a consuming “Aesh אש” fire), represented by the letter ש Shin a devouring fire, that hovers upon the letters ים Iod-Mem, the face of Yam, our creative sexual waters.
“And the Spirit (א Aleph) of אלהים Elohim (who is a consuming “Aesh אש” fire) hovered upon the face of the waters.” – Genesis 1: 2
Genesis 1:9,10
And Elohim said, Let the (genital) waters under (the central nervous system) the heavens be gathered together unto one place (the spinal medulla), and let the dry land (of Canaan) appear: and it was so. And Elohim called the dry land Earth (physical, astral, mental, causal bodies); and the gathering together of the waters (or fluids of the central nervous system and genitalia) called he Seas: and Elohim saw that it was good.” – Genesis 1: 9, 10