Noun
a thick sweet and pungent Chinese condiment
Source: WordNetChan says he seen duck sauce packets in California, but fairly infrequently. Source: Internet
It was here, at the age of 14, that he saw for the very first time such white-trash delicacies as “egg foo young”, “fried chicken fingers” and another kitchen worker stirring a large bucket full of duck sauce with a wooden canoe paddle. Source: Internet