Federal food authorities are investigating a growing E. Coli outbreak at California dairy farm Raw Farm, which is known as the country's largest raw dairy producer. The company is fighting the claims, claiming there is no proof that their products are to blame. The FDA has asked Raw Farm to recall its raw cheddar cheese, which has been implicated in the outbreak. The farm's president, Aaron McAfee, claimed that recent testing showed no negative results from retail, food safety team, or government sampling. However, the FDA has yet to legally force Raw Farms to recall the cheese.