-Origin: Cultivated throughout the country; Sweet and sour corner premium production area: Phetchabun, Loei

-Season: 11 months - February of the following year

-Introduction: Brown curved soybean pods, divided into sweet and sour varieties; sour ones are mostly used in Tom Yum Soup, a Thai sauce; sweet ones can be

Directly fresh eating, a Thai signature condiment fruit, with high export demand

-Nutritional: High in calcium, phosphorus, iron, vitamin C, and organic acids; it stimulates appetite and digestion, and supplements minerals