Katarzyna Ploszaj may run a New York restaurant specializing in French-American cuisine, but food from her native Poland still holds a place in her heart. That’s because Ploszaj remembers her mother’s cooking, and especially those little dumplings stuffed with all manner of tasty fillings, like cheese and meat.Katarzyna Ploszaj may run a New York restaurant specializing in French-American cuisine, but food from her native Poland still holds a place in her heart. That’s because Ploszaj remembers her mother’s cooking, and especially those little dumplings stuffed with all manner of tasty fillings, like cheese and meat.