In a wide mixing bowl, add gram flour, rice flour, turmeric powder, red chilli powder, sesame seeds, ajwain seeds, salt and melted butter.
Mix well without adding water first and then add water gradually to make a soft and smooth dough. Cover and keep it aside.
Clean the murukku maker, coat it with oil. Insert small portions of the dough into the murukku maker. Choose a medium size hole in the muruku maker for making this kind of murukku.
Use a silicon mat to rest the muruku coming out of the murukku maker. Depending on the size of the mat you can place 3-4 murukkus on the mat.
Then using a spatula, transfer the murukku from the mat to hot oil. The fying process starts with a nice bubbling sound.
Now the murukku appears firm and start holding its shape. At this instance, flip to cook other side.
Once the bubbling sound disappears, remove the murukku from oil and transfer to a plate lined with kitchen towel.
Cool down to room temperature and store it in an air tight container.