Shiva Purana

siva.sh/siva-purana/kotirudra-samhita/10/9

रक्षसा सूदरूपेण संमिश्रितनरामिषम् ।। शाकामिषं पुरः क्षिप्तं दृष्ट्वा गुरुरथाब्रवीत् ।। ९ ।।

sanskrit

On seeing the vegetarian and non-vegetarian dish in which the demon in the guise of a cook had mixed human flesh, the preceptor said.

english translation

rakSasA sUdarUpeNa saMmizritanarAmiSam || zAkAmiSaM puraH kSiptaM dRSTvA gururathAbravIt || 9 ||

hk transliteration by Sanscript