Selassie Atadika is hoping her work will demonstrate the vastness of Africa’s gastronomy to a wider audience — Selassie Atadika vividly recalls a pivotal moment when she was around six years old, eyeing a pretty dress in a department store. Due to the political instability at the time, her family had newly relocated from Accra, Ghana, to the Hudson Valley, north of New York City. “I said, ‘Mommy…