I found this on a beverly hillbilly fan website. It sounds 'bout right.
Mountain Measurements
1 smigeon = teensy l’il bit
3 smigeons = pinch
4 pinches = little bit
4 little bits = a middlin’ amount
3 middlin’ amounts = 1 right smart amount
5 right smarts = a whole heap
Lester Flatt and Earl Scruggs visit the Clampett and solve the problems they are having at the mansion. They cure Jethro’s hunger by making him biscuits and red-eye gravy, and after Jed and Jane’s failed attempts