Those who have received instruction regarding the evils of the use of flesh foods, tea, and coffee, and rich and unhealthful food preparations,
and who are determined to make a covenant with God by sacrifice, will not continue to indulge their appetite for food that they know to be unhealthful.
God demands that the appetite be cleansed, and that self-denial be practiced in regard to those things which are not good. This is a work that will have to be done before His people can stand before Him a perfected people.
(Counsels on Diet and Foods 381.2)