The origin of churros is unclear. One theory is they were brought to Europe from China by the Portuguese. The Portuguese sailed for the Orient and, as they returned from Ming Dynasty China to Portugal, they brought along with them new culinary techniques, including modifying the dough for youtiao, also known as Youzagwei in southern China, for Portugal. However, they modified it by introducing a star design because they did not learn the skill of “pulling” the dough (the Chinese Emperor made it a capital crime to share knowledge with foreigners). As a result, churros are not “pulled” but rather extruded out through a star-shaped die.