Chop the raw mangoes in to lengthwise pieces. You can include the mango seed too. In a cooking vessel add raw mango pieces, water, jaggery and salt. Let it cook covered till the mango turns soft.
When the mango is cooking, in a pan add oil, lentils, coriander seeds, fenugreek and red chillies. Roast them together till the lentils turn little brown. Switch once done. Take these roasted ingredients in a mixer along with grated coconut and grind to fine puree. Add water as needed.
Include the ground spice puree in to cooked mango pieces. Add water to get the curry to the desired consistency. Adjust salt and bring it to boil. Once done, switch it off.
Yummy raw mango curry in Konkani style is ready serve with hot steamed rice.