Anandakanda 2.5.42

2.5.42

brahmabījarasaiḥ śigrukvāthair gopayasāpi ca /
pratyekaṃ saṃprapeṣyādau pūrvagarte puṭe pacet //

with juices of brahmabīja, horse-radish tree decoctions, and cow's milk: / grinding thoroughly with each one first, one should cook it in a pit in the aforesaid pit.