Mantras chanted in the Hindu tradition before partaking of food

"Annam parabrahma swaroopam"
(Food is an aspect of the Supreme)

Brahmaarpanam brahmahavirbrahmaagnau brahmanaa hutam;

Brahmaiva tena gantavyam brahmakarmasamaadhinaa.

(Bhagavad Gita Ch. 4, v. 24)
Meaning:

Brahman is the offering; Brahman is the melted butter (ghee); by Brahman is the

offering poured into the fire of Brahman; Brahman shall be reached by him who always sees Brahman in all.

Aham vaishwaanaro bhootwaa praaninaam dehamaashritah;

Praanaapaana samaayuktah pachaamyannam chaturvidham
(Bhagavad Gita Ch. 15, v. 14)

Meaning: Having become the digestive fire (Vaisvaanara), I abide in the body of living beings and, associated with the Prana (upward force)  and Apana (downward force), digest the fourfold food.