There has been much speculation about the most likely identity of the original plant. Traditional Indian accounts, such as those from practitioners of AyurvedaSiddha medicine, and Somayajna called Somayajis, identify the plant as "Somalata" (Sarcostemma acidum).[7] Non-Indian researchers have proposed candidates including the fly agaric, Amanita muscaria; Psilocybin mushrooms, Psilocybe cubensis; wild or Syrian rue, Peganum harmala; and ma huang, Ephedra sinica.

Ayurveda therapies have varied and evolved over more than two millennia.[2] Therapies include herbal medicinesspecial dietsmeditationyogamassagelaxativesenemas, and medical oils.[9][10] Ayurvedic preparations are typically based on complex herbal compounds, minerals, and metal substances (perhaps under the influence of early Indian alchemy or rasashastra). Ancient Ayurveda texts also taught surgical techniques, including rhinoplastykidney stone extractions, sutures, and the extraction of foreign objects.[11][12]

Siddha medicine - The herbal agents used by the siddhars could be classified into three groups: thavaram (herbal product), thadhu (inorganic substances) and jangamam (animal products).[16] The thadhu agents are further classified as: uppu (water-soluble inorganic substances that give out vapour when put into fire), pashanam (agents not dissolved in water but emit vapour when fired), uparasam (similar to pashanam but differ in action), loham (not dissolved in water but melt when fired), rasam (substances which are soft), and ghandhagam (substances which are insoluble in water, like sulphur).[17]

Practitioners of - Somayaga

Based on various references from the Vedas and Ayurvedic literature
, it seems likely that Soma was not one plant in particular, but a collection of plants. There may have been one Soma plant in the beginning, but over time, even the ancients were using different herbs to prepare this drink. This point is important as we get to the recipe part.

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Soma the Nectar of the Gods - ROBERT SEPEHR​

No Escape - The Mystery of SOMA Finally Solved

Somlata [सोमलता] in the Hindi language is the name of a plant identified with Cynanchum acidum (Roxb.) Oken from the Apocynaceae (Oleander) family having the following synonyms: Sarcostemma acidum, Asclepias acida, Sarcostemma brevistigma.

Gospel of Thomas Saying 108
Jesus said: He who drinks from my mouth will become like me, and I will become like him, and the hidden things will be revealed to him.