We are calling it "NATURALS" because the base ingredients are ALL NATURAL food sources for Carp.  Crushed Oyster Shell, which resembles Zebra Mussel's and the "crunch factor".  Kelp, fish meal, and a couple other organic food sources all combined with panko to help bind it altogether.  Mix in a can of cream corn and you are all set, or you can add in your favorite liquid flavoring for an added effect.   We found that this recipe takes away that leeriness of feeding by Carp because these "NATURAL"  ingredients are not foreign ingredients introduced into the swim.