General description and special characteristics – A semi-perennial shrubby plant that is sometimes grown as an annual. The cooked fruits provide a useful vegetable in the tropics. The size and shape of the fruit varies with the variety, including round, oval, and long. Color also varies between white, yellow, green, and purple.
- Bitter (พันธุ้ท้องถิ่นพม่า): Burmese variety. Color is green and red, with bumpy outside. Flavor is bitter and often eaten with chilli paste.
- Naga (พันธุ์สีเขียว): Perennial, producing many big fruit all-year round. Plant in cold season. Fruit is edible when young.
- Tung Kwang Tong (พันธุ์ท้องถิ่นทุ่งกวางทองสีม่วง): Deep purple in color and fleshy meat; 20 cm long and 28 cm round.
- Yellow (พันธุ์สีเหลือง): Very productive in hot, humid weather. Fruit turns yellow when mature. Edible when young and green (firm and less bitter) and when mature and yellow (softer and slightly more bitter).
- Crispy Purple (พันธุ์ท้องถิ่นสีม่วง): Small local eggplant light purple in color. Often used for eating with chilli paste.
- Mae Tha (พันธุ์ท้องถิ่นสีเขียว): Fruit is 2-3 cm in diameter, white and crispy. Eaten raw as vegetable, in salads or in spices like nam phrik.
- Small Eggplant (มะเขือดาว): Smaller in size, fruit is white. A strong variety and prolific producer. Crunchy texture. In Thailand it is often eaten raw with chilli paste