(Panera Bread, Subway and Au Bon Pain ) The Panera Bread chain's menu started featuring avocado this summer, while Subway, center, has been promoting avocado at breakfast. At Au Bon Pain, avocado on a sandwich suggests it is 'something special.'
Breaking Out of Guacamole to Become a Produce Star
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SEPTEMBER 19, 2012
Anne Marie Chaker, WSJ

The fruits are now having a mass-market breakthrough, as supermarket sales surge and restaurant chains spread them and slice them on sandwiches and salads.
Read more: Wall Street Journal