When I was a child, I idolized the ballerina Melissa Hayden, never dreaming that one day I would marry her son. I also had no idea that this glamorous dancer spent her free time in the kitchen, whipping up gefilte fish and kreplach and other Ashkenazi Jewish delicacies learned from her mother. In fact, around the holidays, when she wasn’t busy dancing the role of the Sugar Plum Fairy in Balanchine’s Nutcracker, Hayden might be home with her children frying up a batch