Ratanà – the home of larger-than-life chef Cesare Battisti (and some worthhile photography too)
Via Gaetano de Castillia, 28,
IT-20124 Milano
http://goo.gl/maps/cpFsE
Fonderie Milanesi – *literally* a hidden gem (keep going through the courtyard)
Via Giovenale
IT-720136 Milano
https://goo.gl/maps/c84uM
Il Mercato del Duomo – giving Eataly a run for its money?
Piazza del Duomo
IT-20121 Milano
https://goo.gl/maps/O153g
Also, if you are attending EXPO2015, be sure to stop by the Slow Food Pavillion. Enjoy.