Mango powder, also known as "aamchoor," is a tangy and sour spice made from dried unripe green mangoes. It is commonly used in Indian, Pakistani, and Southeast Asian cuisines to add a distinctive tartness and fruity flavor to various dishes.To make mango powder, green mangoes are harvested before they fully ripen. The mangoes are then sliced and sun-dried until they become crispy and dehydrated. Afterward, the dried mango slices are ground into a fine powder, which can vary in color from light beige to pale yellow.