Chef Heather Terhune demonstrates knife skills with Chicago Cutlery and shares fresh, summer tips at the Green City Market on Saturday, June 22, 2013 in Chicago Illinois. (Scott Boehm / AP Images for ... more 
Chef Heather Terhune demonstrates knife skills with Chicago Cutlery and shares fresh, summer tips at the Green City Market on Saturday, June 22, 2013 in Chicago Illinois. (Scott Boehm / AP Images for Chicago Cutlery) less 
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Associated Press
Sat, Jun 22, 2013 1:44 PM EDT