Italian Potato Salad

5 cups thinly sliced cooked potatoes
1-½ cup chopped celery
1 cup diced Provolone cheese
¾ cup cubed hard Italian sausage
½ cup chopped green pepper
1/3 cup chopped onion
¼ cup chopped peperoncini
1-½ cup sour cream
¼ cup brine from peperoncini
½ tsp. oregano, crushed
½ tsp. salt
12 cherry tomatoes, cut in half

Toss together first 7 ingredients in large bowl. Blend sour cream, brine, oregano and salt in small bowl. Add to potato mixture, tossing to blend. Fold in half the tomatoes. Chill covered, for several hours. Garnish with remaining tomatoes and parsley.