Health and Human Services Secretary RFK, Jr. wants to stop demand for fake food colorings and Americans are slowing demand for fake food products. The demand for plant-based milks skyrocketed in percentage terms just a few years ago. Farm state politicians rushed to regulate the use of the word “milk” when it came to products not derived from dairy. Farmers feared that plant-based drinks also labeled milk would undercut demand in the dairy industry. One of the most successful alt-milks has been almond milk, but it has been widely noted that demand for the product is a mile wide but only an inch deep.  Global sales of plant-based milks are only about 10 percent of dairy milk sales. Now sales of some products are plummeting a...