Why don’t we light a lamp in Mandir with Vanaspati Ghee?

Only Satvik and health-friendly offerings are made to God. Whatever is not offered to God should not be taken or taken only in a limited quantity. Vanaspati ghee is hydrogenated oil and is linked to heart attack, diabetes, blood pressure, paralysis and cancer. Lighting of a lamp in a mandir is always done either with oil or clarified butter (pure ghee).