At night when you go to bed, take two drams of fine Gum Tragecanth, put it into a Galli-pot, and put half a quarter of a pint of any distilling water fitting the purpose you would make your Troches for, to it, cover it, and the next morning you shall finde it in such a Jelly as Physician, call Mussilage, with this you may (with a little pains taking) make any Pouder into Paste, and that Paste into little Cakes called Troches.
Source: wiktionary