.
"Food is the form of the all-sustaining Vishnu.
Energy is the essence of food. Mind is the essence of energy.
Knowledge is the essence of mind.
Bliss is the essence of knowledge."
(Maitrrayani Upanishad VI. 13).
The Upanishads exalt the process of eating food to divine worship, because the
food and the eater of food are forms of Divinity.