“Mangifera indica”

Amchur (also spelled amchoor) is unripe or green mango fruits which have been dried and ground.  It is used primarily in Indian cooking as an acidic flavoring in soups, chutneys, curries, and marinades, and is an essential ingredient in Chaat Masala.  Amchur has the same tenderizing qualities as lemon or lime juice, but only a 1/3 as much is needed.