kinda palm off the REALLY excess brittle skin
chop off the twisty spike, giving a flat end to...
sit the onion down and chop in half
easily peel skin from both halves in one fell swoop
cut slits from hairy root to [now flat] end
go perpendicular and slice into flattened end 3 or so times to hairy root
then do the cheffy choppy choppy chop from flat end to hairy root, spunking out perfect little cubes every time.
^^^Like that or you live in a fucking tree