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→Method of preparation
1. There are usually three essential components in the manufacture of Ghṛta Kalpanā.
* Drava [Any liquid medium as prescribed in the composition]
* [[Kalka ]] [Fine paste of the specified drugs]
* Sneha dravya [Fatty media - Ghṛta] And, occasionally.
* Gandha dravya [Perfuming agents]
3. There are a few exceptions for the above general rule:
* Where Drava dravya is either [[Kvātha ]] or [[Svarasa]], the ratio of Kalka should be one-sixth and one-eighth respectively to that of Ghṛta. If the Drava dravya is either [[Kṣīra ]] or [[Dadhi]] or Maṁsa rasa or [[Takra]], the ratio of [[Kalka]] should be one-eighth to that of Ghṛta.
* When flowers are advised for use as Kalka, it should be one-eighth to that of Sneha.
* Where the number of Drava-dravya are four or less than four, the total quantity should be four times to that of Ghṛta.
* If, Kalka dravya is not prescribed in a formulation, the drugs specified for the Drava-dravya [[Kvātha]] or [[Svarasa]] should be used for the preparation of Kalka.
* Where no Drava dravya is prescribed in a formulation, four parts of water should be added to one part of Ghṛta.
4. In general, the Ghṛta should be subjected to Mūrchana process, followed by addition of increments of [[Kalka ]] and Drava-dravya in specified ratio. The contents are to be stirred continuously thoroughout the process in order to avoid charring.
5. The process of boiling is to be continued till the whole amount of moisture gets evaporated and characteristic features of Ghṛta appears.
* Mrdu Pāka: In this stage, the Kalka looks waxy and when rolled between fingers, it rolls like lac without sticking. The Ghṛta obtained at this stage is used for Nasya [Nasal instillation].
* Madhyama Pāka: In this stage, the Kalka becomes harder and rolls into Varti. It burns without crackling sounds when exposed to fire and phena [froth] will disappears in Ghṛta. The Ghṛta obtained at this stage is used for Pāna [Internal administration] and Vasti [Enema].
* Khara Pāka: Further heating of the Ghṛta, leads to Khara paka. [[Kalka ]] becomes brittle when rolled in between fingers. The Ghṛta obtained at this stage is used only for Abhyanga [External application].
8. The period of Pāka depends upon the nature of liquid media used in the process.
* [[Takra]] or Āranala 5 Nights
* [[Svarasa ]] 3 Nights* [[Kṣīra ]] 2 Nights
9. Patra Pāka: It is the process by which the Ghṛta is augmented or flavored by certain prescribed substances. The powdered drugs are suspended in a vessel containing
