Heat a pan with oil, mustard seeds and curry leaves. As the mustard splutter, slowly add the slit wedges of Mangalore cucumber such that it's skin is in contact with pan. Let it roast in medium flame.
While the veggie is cooking, heat another pan adding oil, both lentils, curry leaves and red chillies. Saute and roast them for few minutes. Then include coriander, cumin and fenugreek seeds. Continue sauteing till all the spices are roasted.
Finally include the sesame seeds and saute for few more seconds and switch off. Transfer all these spices in to a mixer jar, include grated coconut too. Adding little water grind it to little coarse paste.
Now the Mangalore cucumber pieces would have roasted to perfection with kernel turning to tender soft.
Now, include the ground paste from above step. inlcude tamarind extract, jaggery powder and salt. Bring this to boil.
Extremely delicious roasted Mangalore cucumber curry is ready to serve with hot steamed rice.