4 ounces watercress (1 qt.)
1 cup mayonnaise
2 tablespoons lemon juice
2 teaspoons anchovy paste
1 clove garlic, peeled
Salt and pepper

Rinse watercress and drain well; pat dry with towels, then coarsely chop. In a blender or food processor, whirl watercress, 1/2 cup mayonnaise, lemon juice, anchovy paste, and garlic until smooth. Pour into a bowl and whisk in remaining mayonnaise until smooth. Add salt and pepper to taste.