Keep in mind: The type of apple you choose will greatly impact the flavor of your soup. If you are partial to a more savory soup, choose a tart apple, like Granny Smith. If you don't mind sweetness in your soup, Fuji or Gala apples are a good choice. We would advise avoiding super-sweet apples, like Pink Lady or Honey Crisp, unless you are looking for a soup that is on the sweeter end.