Warm Vegetable Salad With Mustard Dressing - cooking recipe

Ingredients

red leaf, endive, romaine, Boston or bibb lettuce (3 c.), torn into bite-size pieces
1/2 large red pepper
1/2 large yellow pepper
1 to 2 celery ribs
2 carrots
1 leek
1/2 lb. fresh mushrooms
2 shallots
salt and pepper to taste
2 Tbsp. unsalted butter
2 Tbsp. heavy cream
1 Tbsp. grainy mustard
1 tsp. Dijon mustard
1 Tbsp. plus 2 tsp. sherry wine vinegar
1 Tbsp. water
1/4 c. salad oil

Preparation

Dressing:
Combine mustard, vinegar, water, salt and pepper in a small bowl.
Whisk in oil.
Set aside.