It's a word play on your handle, a currently influential person, and this rather tasty dish. I must confess I coveted your Moniker and Avatar and would have stolen it for myself while you were away (abroad?) except that it is uniquely you.
ROFL... Ok, now I get it... It's a little far afield but it is funny.
The handle is actually a play on "commentator" ... someone who writes commentary... which seems very appropriate in a forum setting. I've been using it for a long time now and I'm frankly a little surprised that most people can't make the connection between "ordinary potato" and "writing of messages"....