Cakradatta (Cikitsasangraha) 34.32

34.32

pṛthagdaśapalānbhāgāṃstatastoyārmaṇe pacet .
yavakolakulatthānāṃ prasthaṃ prasthaṃ ca dāpayet .
tena pādāvaśeṣeṇa ghṛtaprasthaṃ vipācayet .. 32 ..

cook ten palas each of these parts in an armaṇa of water, / and add a prastha each of barley, kola, and kulattha; / with that [decoction] reduced to a fourth, one should cook a prastha of clarified butter