I always eat braunschweiger as a kid and I wanted to find a use for the liver and heart from deer. So I copied a recipe for the spices of Liverwurst and adapted it to use deer with some pork fat. SO here you have German Liverworst make wit 1 deer hear, 1 deer liver, 2# ground deer meat and 2# pig fat. https://archeryrob.wordpress.com/2018/04/23/german-liverwurst/
Have heard of folks taking a cast iron skillet, onions and butter to the deer woods for cooking fresh liver, but have never seen anybody make use of it and the heart like you are doing AR, good stuff
"It ain't what you don't know that gets you in trouble. It's what you know for sure, that just ain't so" Mark Twain