Assertion: mayonnaise | /r/HasProperty | thrived on the u.s. east coast
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text: While Hellmann's Mayonnaise thrived on the U.S. East Coast, selling $15 million a year by 1927 with $1 million in profits, the California company Postum Foods (later Best Foods) introduced their own mayonnaise, Best Foods Mayonnaise, which became popular on the West Coast, and was operating a major plant in San Francisco.