Carambola, popularly called star fruit for the five-pointed star shape revealed when sliced crosswise, is a waxy, golden-yellow tropical fruit with crisp, juicy flesh and a flavor that balances sweet, tart, and faintly floral notes. It is cultivated across the tropics and enjoyed fresh, juiced, or as a striking edible garnish.
History & Origins
Carambola has been cultivated in its native range of Malaysia, Indonesia, and southern China for centuries, with references appearing in Chinese texts of the Tang dynasty (618–907 CE). Portuguese traders and later European naturalists carried it to the Indian subcontinent, the Pacific, and the Caribbean, and it reached Florida in the 19th century. Today the leading commercial producers are Malaysia, Taiwan, Thailand, and Brazil, with Florida-grown fruit shipped across North America.
Nutrition Facts
Per 100 g, edible portion (estimated)
- 31 kcalCalories
- 1.04 gProtein
- 0.33 gFat
- 6.73 gCarbs
- 2.8 gFiber
- 3.98 gSugars
- 133 mgPotassium
- 34.4 mgVitamin C
- 3 mcgVitamin A
Culinary Uses
- Eaten fresh as a refreshing snack, sliced across the grain
- Juiced or blended into tropical smoothies and cocktails
- Used as a decorative garnish on desserts, salads, and cheese platters due to its star-shaped cross-section
- Pickled or cooked into chutneys in South and Southeast Asian cooking
- Quickly stir-fried with shrimp, pork, or fish in Thai and Hainanese dishes
Known Benefits
- Rich in vitamin C, supporting immune function and collagen synthesis
- Provides dietary fiber that aids digestion
- Low in calories and virtually fat free, suited to weight-conscious diets
- Contains antioxidant polyphenols including quercetin, gallic acid, and epicatechin
Hidden Benefits
- Good source of folate and pantothenic acid for energy metabolism
- The waxy peel holds higher concentrations of antioxidants than the pulp
- Provides modest amounts of copper and zinc for enzymatic function
- Contains small amounts of beta-carotene contributing to vitamin A activity
Cautions & Considerations
- Contains caramboxin, a neurotoxin that can cause hiccups, confusion, and in severe cases be fatal to individuals with chronic kidney disease
- Must be strictly avoided by people on dialysis or with impaired renal function
- May interact with certain medications metabolized by CYP450 liver enzymes
- Notable oxalic acid content may aggravate kidney-stone risk in susceptible individuals
