资料来源：
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.kingarthurbaking.com%2Frecipes%2Fbaked-doughnuts-three-ways-recipe&psig=AOvVaw3e12cw2XGhleDU7ZQQxgm_&ust=1694047129961000&source=images&cd=vfe&opi=89978449&ved=0CA4QjRxqFwoTCIDF07_flIEDFQAAAAAdAAAAABAJ