 Several of the world 's largest food operating plants are operated in Ohio : the world 's largest yogurt processing plant is operated by France @-@ based Groupe Danone in Auglaize County , which announced an $ 88 million expansion of its facilities in 2011 ; Campbell 's operates the world 's largest soup processing plant in Napoleon , Heinz operates the world 's single largest ketchup processing plant in Fremont , and General Mills operates the world 's largest frozen pizza processing plant in Wellston . Pierre 's Ice Cream , headquartered in Cleveland , is undergoing an $ 8 million , 35 @,@ 000 @-@ square @-@ foot ( 3 @,@ 300 m2 ) facility expansion of their operations . 
