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.
The True Man