Lime (Citrus aurantifolia) is a sort of citrus fruits that are traditionally cultivated in Asian countries. In
Thailand, most of lime plantations are located in the West and the South regions with the total production over
120,000 tons a year. Lime is deemed as a household fruit because lime juice is an essential ingredient in many
kinds of authentic Thai food due to its unique sour taste; for example, Pad Thai noodle, papaya salad (Som Tum)
and Tom Yum soup.