Editing Generally recognized as safe (section)

==Intended use==
The substance must be shown to be "generally recognized" as safe under the conditions of its intended use.<ref name=GRASfda/> For new proposals, the proponent of the exemption {{ndash}} usually a [[food manufacturing|food manufacturer]] or ingredient supplier wishing to highlight a food ingredient in its manufactured product {{ndash}} has the burden of providing rigorous scientific evidence that use of the substance in an edible [[consumer product]] is safe.<ref name=GRASfda/> To establish GRAS, the proponent must show that there is a consensus of expert opinion that the substance is safe for its intended use.<ref name="fda"/> For existing GRAS items, new uses should not substantially exceed historical occurrence levels of the substance in the diet.<ref name=GRASfda/>