I am not too wild about heating anything apple with my wines. They have lots of pectin and if you heat it and it sets, you can have a time trying to get the wine to clear if it will even clear. I would go with chunks of apple, not the sauce. When it comes time to rack, the chunks are much easier to remove than the sauce would be. Think it would leave you with lots of lees. But I think it would probably work just fine. Remember, I am the lazy man and like to do things the easy way. Good luck with it, Arne.