“In the Bhagavad-gita (9.26) the Lord directly states that He accepts vegetarian food from the hands of a pure devotee. Therefore a human being should not only become a strict vegetarian but should also become a devotee of the Lord, offer the Lord all his food and then partake of such prasadam, or the mercy of God.” (Shrila Prabhupada, Shri Ishopanishad, 1 Purport)