Anandakanda 1.23.229

1.23.229

sampuṭaṃ bandhayedvastre mṛdā lepyaṃ ca śoṣayet /
taṃ ruddhvā cānyamūṣāyāṃ dhmāte sampuṭamāharet //

One should tie the covered dish in a cloth, coat it with clay, and dry it;
having sealed it inside another crucible, when blown upon, one should take out the covered dish.