Italian Dogs Jersey style

I have seen the pictures on Jimmy Buff's site, but what I haven't figure out are the potatoes in the dog cubed, in squares, like Scrabble tiles, or sliced like chips, and are they sauteed or deep fried, and the onion and peppers are sauteed with the deep fried frankfurters and placed in bread like a muffuletta bread. I wonder if the potatoes could be shoestring like whats on a Cuban fritas burger.