2 1/2 lb. red potatoes
1/3 c. finely chopped parsley
1 sm. onion
1 tbsp. Dijon mustard
1 tsp. salt
1/4 tsp. pepper
3/4-1 tarragon leaf
1-2 cloves garlic
1/2 c. white wine vinegar
2/3 c. olive or salad oil

Steam or boil potatoes; let stand 10 minutes. With skin on cut into 3/8 inch slices. Add parsley and onions.

Blend together mustard, salt, pepper, tarragon, garlic, vinegar and oil. Pour over warm potatoes. Gently toss to coat. Let stand at least 3 hours. Chill if desired.