Bhutan Sour Honey locally called "Putka Honey" is a superfood harvested by the stingless bees called Melipona under the tribe of Meliponini. Stingless Bee Melipona forages in the protected regions of Bhutan between 700 to 1500 meters above sea level at Lokchina Gewog, Chukha District. Harmful pesticides and synthetic fertilizers are not permitted in Bhutan. Therefore, Bhutanese farmers have to rely on Stingless Bee Melipona to pollinate their crops and increase their yields. Putka Honey is a high level of propolis that contains Phenolic, Flavonoids and Cinnamic acid derivatives. Propolis is a complex resinous material that bees collect from tree exudates primarily resins of leaf bud and other botanical sources. It contains all 16 amino acids, glucose, vitamins A, B, C, D and E, bioflavonoids and minerals.