Which sauce is commonly served with sweet-and-sour pork in Chinese-American cuisine?

Sweet and sour sauce

Who is known as the messenger god in Greek mythology? Who is the flying boy in "Treasure Planet" who dreams of adventure? What pop star released the iconic album "Thriller"? Which horror movie character invades dreams and wears a clawed glove? In Portugal, what might people traditionally burn publicly on Christmas Eve for communal warming and social gatherings?