The two Gita verses recited before meals — offering the food, the eater and the act of eating itself to Brahman, and remembering the divine fire that digests all nourishment.
Traditionally: food that is chewed, drunk, licked and swallowed (bhakshya, bhojya/peya, lehya, choshya) — that is, nourishment in all its forms.
Source: Bhagavad Gita 4.24 and 15.14. Regional versions may vary — this text follows the version most widely used in community worship.