Roberto’s mom, Adele, was my cooking mentor the two weeks I spent in Sicily. I watched as she prepared, mostly by memory, Pan di Spagna, quiche al formaggio, gnocchi, Insalata Russa (delectable potato, shrimp and carrot salad), risotto, frittata, brioche and caponata. Adele is the “nonna” (grandmother) of the family and queen of the kitchen….