Place pork roast in a slow cooker.
In a medium bowl, mash cranberry sauce; stir in sugar, cranberry juice, mustard and cloves. Pour over roast.
Cover and cook on low for 6 to 8 hours or until meat is tender.
Remove roast and keep warm.
Skim fat from juices; discard.
Add broth to a 2-cup measuring cup, adding water if necessary to equal 2 cups liquid.
Pour into saucepan and bring to a boil over medium-high heat.
Combine cornstarch and cold water to make a paste; stir into saucepan.
Cook and stir until thickened.
Season with salt.
Serve over sliced pork.