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Kanji (sour rice gruel) is an acidic fermented preparation mentioned in many of the Ayurveda classics for various purpose like therapeutic use, pharmaceutical processes etc. A special method of kanji preparation is mentioned in Rasaratnasamuchchaya commentary by Acharya Dattatreya Anant Kulkarni and similar preparation is also mentioned in Rasayansara book recommended for the Parada samskara (mercurial processes) with some difference in ingredients. Kshara (alkaline preparation/ alkali) is an important preparation mentioned in classics. In Rasayansara text, Acharya Shyamsundar Vaishyaji has described a unique method of Kshara nirmana out of the leftover material of the Kanji. This kind of innovative methods should be adopted to recycle the leftover waste matters. It will help in regenerate the new pharmaceutical product. Here an attempt has been done by preparing the kanji and the kshara out of its residue material as mentioned in Rasayansara. First Kanji was prepared as per the reference of Rasayansara book and the leftover after filtration was dried. The kshara was prepared out of this dried leftover. Organoleptic and physicochemical analysis of the prepared kshara was done. The average yield of obtained kshara was 4.88%. The moisture content of the final product found very less while total ash value found on higher side. The pH value suggests its alkaline nature. It shows good solubility in various solvents and good water-soluble extractive value. Exploration of such innovative procedures where waste stuff is been recycled should be increased in present time.

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Among various branches of Ayurveda, Rasashastra is an important branch known for its various formulations called as Rasaushadhi (Mineral or Herbo-mineral medicines). According to various classics of Ayurveda, some Pathyapathya (Wholesome and unwholesome diet / regime) are explained which should be followed during the Rasasevanakala (period of consuming Mercurial Preparation). The group of fruits and vegetables which are advocated as Apathya (unwholesome diet) during the Rasasevanakala is known as Kakaradi Gana. In some texts, eight number of such dravyas are mentioned and this group is known as Kakarashtaka Gana. The total number of drugs mentioned under the Kakaradi Gana in various classics are different. These Kakaradi gana drugs also has other utility in the Rasashastra other than unwholesome regime. Here an attempt has been made to compile the Kakaradi gana, Kakarashtaka gana with Probable rationale behind elucidation of these gana and significance of these ganas are also discussed here.