Decoction, or boiling, is employed to extract the mucilaginous or gummy parts of substances, their bitter, astringent or other qualities, and is nothing more than boiling the ingredients in a saucepan with the lid slightly raised. Be sure never to use an iron saucepan for astringent decoctions, such as oak-bark, galls, &c., as they will turn the saucepan black and spoil the decoction. The enamelled saucepans are very useful for decoctions, but an excellent plan is to put the ingredients into a jar and then boil the jar, thus preparing it by a water bath, as it is technically termed; or by using a common pipkin, which answers still better. No decoction should be allowed to boil for more than ten minutes.
Source: Enquire Within Upon Everything.Filed under Technique | Tags: boil, boiling, decoction, gall, gum, jar, oak-bark, pipkin, saucepan | Comment (0)