The perfect accompaniment to the sandwiches - and it can be prepared ahead. 12 servings.

5 lbs. red new potatoes
1/2 c. dry white wine
Salt and freshly ground pepper
1 1/4 c. mayonnaise
1 1/4 c. sour cream
2 1/2 tbsp. Dijon mustard
2 1/2 tbsp. cider vinegar
1/2 lb. blue cheese, crumbled
5 green onions, minced
1 1/2 c. chopped celery

Place potatoes in large pot. Cover with cold water. Boil until tender. Drain. Cool slightly. Peel potatoes. Cut into 1 inch pieces. Transfer to large bowl. Add wine, season with salt and pepper and toss to coat. Cool.

Combine all remaining ingredients. Mix with potatoes. Adjust seasoning. (Can be prepared 1 day ahead. Cover and refrigerate. Let stand 30 minutes at room temperature before serving.)