1 head of soft butter lettuce

1 tablespoon fresh lemon juice
1 tablespoon sherry wine vinegar
one half a cup (a little less) virgin olive oil
1 teaspoon dijon mustard

In a large salad bowl, mix lemon juice, sherry wine vinegar. olive oil, dijon and  a little salt and freshly ground pepper,  Mix well. 

Wash lettuce, dry.  Gently tear leaves in thirds and toss into bowl and toss with dressing.