Take the Mangalore cucumber seeds in a mixer grinder and grind it in to fine puree.
Pour the seeds puree on to strainer and squeeze, so that the you get the extract of those seeds. Discard the residue. In a mixer grinder add grated coconut, cumin seeds, black pepper and salt. Grind them together without adding water to coarse powder.
Include the strained seeds water from step 1 to the coarse powdered content of mixer and grind once again to obtain fine paste. Transfer it in to a bowl and combine with buttermilk. Mangalore cucumber seeds tambli is ready.
Heat a seasoning pan add oil, mustard seeds, split black gram lentil, red chillies followed by curry leaves. When the mustard seeds splutter, lentils turn brown, transfer the seasoning to the tambli. Body coolant, summer specific Mangalore cucumber seeds tambli is ready to serve with steamed rice.