Oh man - Cara Cara Navel Oranges - Delicious!

[Alextown]

If you haven't tried these, go grab some soon, they're only available during winter months. They're dark red on the inside and the taste is outstanding.

They got a good recommendation from Men's Fitness as well -

CARA CARA RED NAVEL
Tastes like: Fresh cherries with a tart cranberry zing.
Cool fact: The fruit gets its name from the flow-ers the Cara Cara tree produces -- the tip of which resembles the human belly button.
Why you should try it: Cara Cara navels are the next best thing to a multivitamin, packed with the vitamin C you expect, plus cancer-fighting lycopene and vitamin A for healthy skin and Superman vision (minus the X-rays).