Dry roast the whole urad dhal/gota till light golden brown, allow to cool and powder in mixie.
In the same pan fry rice flour in low flame with roasted urad dal flour, this way excess moisture in rice flour dried out soon.
Also add salt and gently rub the flour with butter, so that the mixture looks crumbly like shown in the video.
Now sprinkle water and knead to crack free and smooth dough.
The dough should not be gooey.
Heat Oil in a kadai / pan, when temperature attains frying temperature, lower the flame, drop the shaped balls and fry till golden brown (First drop 1 or 2 balls and test it).
Make sure temperature is low to medium while frying.
Drain excess oil by placing over paper towel