Passion fruit

Passion fruit is a nutritious tropical fruit, a good source of nutrients (vitamin A, Folate, vitamin C, Calcium, Magnesium, Pottasium, and Phosporus) especially fiber (7% per serving), vitamin C and vitamin A.

It is is low in Sodium (5 mg per single fruit), Saturated Fat (0 gram) and Cholesterol (0 gram). But mostly the calories come from sugars.

The estimated glycemic load is 1 of typical target total of 100 per day.

Read More http://nutritiondata.self.com/facts/fruits-and-fruit-juices/1987/2#ixzz4j19RXimx

A granadilla (purple) passion fruit of about 18 grams contains:
Calories: 17
Cholesterol: 0% of the RDI
Sodium: 0% of the RDI
Fat: 0% of the RDI
Fiber: 7% of the RDI
Vitamin C: 9% of the RDI
Vitamin A: 5% of the RDI
Iron: 2% of the RDI
Potassium: 2% of the RDI
Carbohydrate: 1% of the RDI

It’s also rich in carotenoids and polyphenols.

The fruit has a tough rind and juicy, seed-filled center.

There are 5 main varieties of passioflora. The most commonly available are the purple and yellow varieties.

Passiflora edulis has small round or oval-shaped fruits with purple skin and yellow filling. The colour changes from green to deep purple when ripe.

Passiflora flavicarpa is usually slightly larger than the purple variety, with round or oval-shaped, white filling and yellow skin. The colour changes from green to yellow when ripe. Like the one in the picture.

In Indonesia, it is popular to have this fruit as beverage. The one with yellow flesh is processed as a fruit juice concentrate. While the white one can be eaten straight.
The pulp is filtered and the seeds are removed to be then cooked with sugar to make a concentrate.

To enjoy it, one should mix the concentrate with water and some ice. The sweet tangy and fragrant of the juice is really refreshing.

Source:
https://en.wikipedia.org/wiki/Passiflora_edulis
http://nutritiondata.self.com/facts/fruits-and-fruit-juices/1987/2
http://www.nafis.go.ke/fruits/passion-fruit/varieties/