Add the rice flour, besan, roasted gram flour, Kashmiri red chilli powder, asafoetida, sesame seeds, and salt to a large mixing bowl. Mix well to distribute the ingredients evenly.
Melt the measured butter and add it to the flour mixture while still hot. Mix carefully with a spoon first, then rub it into the flour with your fingertips once it is comfortable to handle. The mixture should hold together when squeezed, even before adding water.
Add water a little at a time and mix to form a smooth, soft dough that holds together and can be pressed easily. I used approximately 1¼ cup water, but the amount will vary with the flour used. Avoid adding all the water at once.
Fit the ribbon pakoda mold into the murukku press and lightly grease the inside with oil. Heat enough oil for deep frying in a kadai over medium heat. Drop a small piece of dough into the oil; it should rise steadily with bubbles without browning immediately.
Divide the dough into portions that fit your press. Place one portion inside and close the press. Keep the remaining dough covered while you work.
Carefully press the dough directly into the hot oil in a circular motion, forming a loose layer of ribbons. Keep your hands safely away from the oil and avoid overcrowding the pan.
Allow the ribbons to fry until the bubbling reduces, then gently flip them. Continue cooking until the bubbling has mostly subsided and the ribbon pakoda is crisp and lightly golden. Maintain medium heat throughout.
Remove with a slotted spoon and drain on paper towels or a rack. Repeat with the remaining dough.
Let the ribbon pakoda cool completely to room temperature. Break into smaller pieces if desired and store in a clean, dry, airtight container.