If you visit any park or look at your garden pots, you might spot a small green grass called Changeri—scientifically known as Creeping Woodsorrel. It has tiny yellow flowers and sour-tasting fruits.

These changeri leaves contain tartaric, citrus acid and Vitamin C. If you have tasted it, the leaves have a bitter-sweet taste because they also contain carotene, calcium and high levels of oxalates.