The low fat cookies are worse than regular fat cookies. Manufactures begin with the cheapest oils (soy, corn, cottonseed or canola) already rancid from the extraction process. These extracted process are then mixed with tiny metal particles usually nickel oxide, soap like emulsifiers and starch. These materials are squeezed into the mixture to give it a better consistency. To purify the mixture one more time they heat it to high temperatures and steam clean it to removes the bad odor. Bleach is used to get rid of the unappetizing grey color it has through the process. To make this material appetizing dyes and strong artificial flavors are added.