Nadan manga achar, also known as kadumanga achar or Kerala mango pickle, is a traditional South Indian pickle made with raw mangoes. It is a tangy and spicy condiment that is bursting with flavors. The mangoes are marinated in a mixture of spices, vinegar, and oil, which gives it a unique taste. This pickle is a perfect accompaniment to rice, roti, or any Indian meal. It can be stored in an airtight container for months and the flavors only get better with time.