1. Drain syrup from pineapple into a small saucepan; stir in vinegar and spices. Place pineapple in a small bowl.
2. Heat syrup to boiling, then simmer 5 minutes. Strain over pineapple; chill.
3. When ready to serve, drain pineapple slices well; roll edges in chopped parsley; arrange around ham loaf on platter.