an onion with white skin that has a flavour that is less strong than that of other onions

The onions can be white, brown, or red, although the milder, sweeter white onion is ideal. 洋葱可以是白色、棕色或红色的，不过最理想的还是温和、甜甜的白洋葱。

The potato slices are layered with white onion and garlic. 与白洋葱和大蒜一起，分层放入土豆片。