When I started cooking for monty, I joined a facebook group recommended by
@snowbunny. they have a huge number of files on there that answers almost questions you might have. They do a recipe calculator on there, where you can put in weights and percentages to check it’s balanced and healthy. There’s also guidance on supplements you may need to add in, though if you have some raw bones then you may not need this. beware, it’s a strict group with many rules but an excellent resource.
For now, I’ve reduced back my home cooked additions to 25% of their daily food, so it becomes a ‘topper’ and you don’t need to worry quite some much about the balance of ingredients, or adding in secreting organs. Because of Bear, I now only cook with white fish, rice and three or four veggies. With Monty, I used beef, fish, chicken, turkey, heart, a bit of pork and lamb, as well as heart, kidney and liver. And at least ten types of fruit and veg.
Starting with a topper would be a good way to start it for a few weeks so you can get a feel for it, and this would be a good use of what your butcher could give you... if you are going to make it a bigger proportion of meals, you’d really want to know the balance of meats going in there. And then it becomes more expensive, too.
