Kiwi

All varieties of kiwi are extremely rich in vitamin C.

An excerpt from the article 15 facts about kiwi

Eating 100 grams of kiwifruit (about one piece) satisfies the daily requirement for this vitamin by more than 100 percent. Compared to apples (about 5 mg/100 g of fruit), kiwifruit (93 mg /100 g of fruit) contains almost 20 times more vitamin C.

Kiwi fruit also contains vitamins E, K, folic acid, potassium, copper, carotenoids, and dietary fiber. 100 grams of this fruit contains 61 calories.