If you buy Kosher beef franks, you are guaranteed to have no filler and no nasty parts... I strictly buy kosher franks when I make my dogs...Kosher blessing is so stringent that they even inspect the knives to make sure they are perfectly sharp, with no niks in the blade to insure no animal suffered in the slaughter...
Don't ask... I dated a couple of jewish girls..
My recipe is to take these 1" diameter franks and with a knife make stripes in the skin from top to bottom all the way around, and then either pan fry them in butter or grill them until they are crispy and crunchy.
I usually top them with onions and Serrano peppers, which is my favorite pepper and ketchup... Thats my variation...