Three Lettuce Salad - cooking recipe

Ingredients

2 heads bibb lettuce (about 1/4 lb.)
1 head Boston lettuce (about 1/2 lb.)
1 head red leaf lettuce (about 1/4 lb.)
2 tsp. Dijon mustard
3 Tbsp. red wine vinegar
1/4 c. olive oil
1/4 c. fresh parsley
salt and freshly ground pepper to taste

Preparation

Trim and core lettuce.
Pull leaves apart; rinse well.
Pat dry.