Grapefruit the oversized acidic orange.

 Grapefruit, a citrus fruit goes in clusters like grapes giving it the name. White, pink and red varieties all have yellow skin but sometimes have a pinkish tint. The juicy fruit has a sweet/tart flavor mostly tart my sister went years without eating one because of this she hates it. I just put sugar on mine a lot of sugar granted but for me and my dad it was a breakfast food. Since they are available all year round. They are low in calories and fat. No cholesterol or sodium, They are high in vitamin C like oranges and kiwi. They are also an excellent source of vitamin A. They also contain the antioxidant lycopene like tomatoes do which may protect against certain types of cancers.