Sweet and Sour Pork

A's birthday is tomorrow and her requests for dinner were carrot souffle and salad. I decided pork was a nice accompaniment to the items she wanted, so I'm trying this:

1 cup red wine (I used shiraz)
2 T worcestershire sauce
2 T balsamic vinegar
1/2 cup grape or blackberry jelly (I wanted blackberry, but used grape, which was on hand)
1/3 cup peach pineapple salsa
5 lb. boston butt

Mix all liquid ingredients together and pour over pork.

I'll let this marinate for a few hours and then put it in the crockpot on low before I go to bed this evening to be ready for dinner tomorrow night.