Gobhilagrihyasutra 1.3.8

1.3.8

atha yadi dadhi payo yavāgūṃ vā, kam̐sena vā carusthālyā vā sruveṇa vai 'va.

If it consists in curds or milk or rice gruel, (he should sacrifice it) with a brazen bowl, or with the pot in which the oblations of boiled rice are prepared, or also with the (sacrificial spoon called) Sruva;