Ribs

I got this from my friend, the slow cooker goddess, Carrie. I hope to one day have her make these for me ;)

1 TBSP mustard powder
1 tsp salt
1/2 tsp pepper
1/2 cup cider vinegar
1/2 cup ketchup
1/2 brown sugar
4 lbs ribs

Whisk together everything but the ribs. Add the ribs & toss to coat. Arrange bone side up. Cook on High 6 hours or Low 10 hours.