A Because of the high costs of laboratory testing, I focused on Green Pasture’s FCLO and X-Factor Butter Oil, the two products most heavily promoted by the Weston A. Price Foundation. Given the disturbing results of that investigation, I have to ask why you would even consider buying from this company? If the product’s “fermented,” it’s most likely rancid and putrid. If the label says “skate livers,” the livers might be from skate, pollock or something else altogether. As for the promised high vitamin content, don’t count on it. Add in the fact that both the FCLO and the X-Factor Butter Oil were sold for years with misleading — some would say fraudulent — labels, and I cannot think of one good reason to support this company.