Measure 1 cup of rice rawa/semolina in a large mixing bowl, wash well in some water, drain and then add enough water to just cover the rawa/suji.
Rest covered for 20-30 minutes.
After 20-30 minutes you will notice that the rice rava has soaked the water and swelled up a bit.
Tip in ½ cup grated coconut, ½ cup jaggery powder, 1 cup of grated cucumber and a pinch of salt.
(You can squeeze out the excess water of cucumber and add later on if needed to make the batter; I did not).
(If you feel the batter is too watery, feel free to add add 2-3 tbsp regular rava or semolina or even rice rava if needed. If adding rice rava, rest a few minutes).
Spoon into greased idli moulds and steam in a pressure cooker (without the weight) or in the Instant Pot (Steamer option), for 20 minutes.
Serve warm with a drizzle of ghee, smeared with white homemade butter or the way I love it, with a side of hot and spicy Indian pickle.