 In April 2015, Kraft further announced that they will remove artificial dyes and artificial preservatives from all of its Mac & Cheese products by 2016.In 2013, Hari wrote about the use of class IV caramel color in Newcastle Brown Ale on her blog and put public pressure on them to drop this ingredient.In January 2015, Heineken announced that they will stop adding class IV caramel color to their Newcastle Brown Ale, and will instead color it naturally with the same roasted malt they had previously used.