Slovak language instructor Julia Vrablova sought out women who could teach her to make the dough for tahana strudla, which can be made with ground poppy seeds, apple or sour cherries. Courtesy of Sasa Woodruff hide caption

itoggle caption Courtesy of Sasa Woodruff

Engineering the perfect cookie: You can control the diameter and thickness of your favorite chocolate chip cookies by changing the temperature of the butter and the amount of flour in the dough. Morgan Walker/NPR hide caption

itoggle caption Morgan Walker/NPR