Anandakanda 2.6.29

2.6.29

alpāgnau pācayedyāmaṃ bhasma taccitrakadravaiḥ /
bharjayellohapātre tatpārthadaṇḍena cālayan //

one should cook them over a mild fire for one yāma. One should roast that ash with juices of citraka
in an iron vessel, stirring it with an arjuna-wood stick.