Bhagavad Gita 17.10

यातयामं गतरसं पूति पर्युषितं च यत्।उच्छिष्टमपि चामेध्यं भोजनं तामसप्रियम्॥

yātayāmaṃ gatarasaṃ pūti paryuṣitaṃ ca yat |ucchiṣṭamapi cāmedhyaṃ bhojanaṃ tāmasapriyam ||

That which is stale, tasteless, putrid, rotten, rejected, and impure is the food liked by the Tamasic.

The ignorant love food that is stale, not nourishing, putrid, and corrupt; the leftovers of others, and unclean.

Our plain-language meaning of this verse is waiting for scholar review.