To a mixing bowl add 1 cup raw rice flour, ¼ cup urad dal flour, 1 teaspoon cumin seeds, 1 tablespoon melted butter, salt to taste and a pinch of hing.
Mix this well first.
Add water little by little.
Mix well and bring everything together to form a soft dough. The dough should not be tight it should be slightly loose only then pressing will be easy.
Now make cylindrical portion with the dough as shown below to fit in the murukku press.
Now take your murukku press.
Grease it with oil well first.
Fill it up with the prepared cylindrical dough.
Press to check.
Grease the back of 2-3 ladles with oil and keep it ready. Now press slowly in the form of a concentric circles.
Tuck in the edges so that it does not open out while frying in oil.
Repeat this in 2-3 ladles at a time.
Heat oil - test by just pinching a tiny piece of batter, and adding it to oil. If it rises immediately then oil is heated well and ready. Then carefully drop the murukku from the ladle into hot oil.
Let it fry in medium flame for few seconds then flip over using a ladle or murukku turner.
Cook till golden and bubbles reduce.
Remove the murukku.
Repeat to finish.
Light crisp thnekuzhal murukku is ready! Drain in tissue, cool down completely and then store in airtight container. This type of murukku is very crispy and stays so longer, am sure you cant stop with one.