a very easy recipe is 15-20% edible bone (all parts of chicken, most parts of turkey, raw fish, pork ribs & neck bones, lamb, goat, etc), 10% organs and the rest meats (beef heart, brisket, ground beef, pork butt, chicken, turkey, goat, lamb, etc) and then some eggs, some cottage cheese, some canned fish, some yogurt, plate leftovers, bread crusts, don't forget the green tripe... whatever you want
to prepare: buy in bulk, freeze in manageable portions, thaw and hand to dog for dinner