If you’re gonna cook for your dog, and you intend to feed a typical protein:carbohydrate:fiber mixture, you need to have a vitamin source, a source of vitamin C, proper amounts of fiber.
If posssible your mix would have lean meat like chicken or egg, and fiber from Asian Stir Fry Vegetable mixes. The MAIN REASON to avoid regular veggies mixes is because ideally, you’d AVOID Limas, Potatoes and Corn.
Here’s the diet, printable or read on line.