Annam Brahmaa Raso Vishnu
Pakto Devo Mahesvarah.
Evam Jnaatvaa Tu Yo Bhunkte
Anna Dosho Na Lipyate
Food is the creator(Brahma), Nourishment is the sustainer (Vishnu)
The god of Digestion is the Destroyer (Shiva)
If you know this, when you eat
The doshas (impurities) of the food will not become a part of you.
From Dr. Lad's Book - Ayurvedic Cooking