You are already
a member and logged in!
We can easily remove the skin of urad dal.
In my family we regularly use that skinned urad dal only.
Soak it for long hrs like 5 to 8hrs.
6 hrs is enough.
wash them no of times like we wash rice.
Mix them with hands & just rub them while mixing
same as rice washing.
do it no of times, then it will go
u can find just 5, 6 black skins.
That u can remove by hand.
Hope this helps u
If u have any doubts, let me know