In a cooker add raw mangoes, water close the lid and cook on medium flame for 4-5 whistles.
In a grinder add mint leaves, cardamom, ginger, water and grind to make fine paste.
After 5 whistles turn off the flame and let the cooker cool down a bit.
After opening the lid put the cooker back on flame.
Mash and mix pulp well and add sugar.
Reduce flame to low, keep mixing and let it cook for a 10 minutes.
After 10 minutes add black pepper powder, black salt, cumin powder, asafoetida, salt and mix well.
Now add mint mixture, mix and let it cook for 2-3 minutes.
After 3 minutes, turn off the heat let it cool down completely and grind the paste again.
Store in a clean, dry glass container and keep it in the fridge.