Ingredients

1 cup mayonnaise 

2 tablespoons capers, rinsed 

2 small anchovies, rinsed and mashed (1 1/2 teaspoons) 

1 jar (7 ounces) oil-cured tuna, drained 

2 tablespoons fresh lemon juice 

1/3 cup extra-virgin olive oil 

Preparation

Puree first five ingredients with 1 teaspoon water in a blender until smooth. With blender running, add oil in a steady stream. Refrigerate in an airtight container at least 2 hours and up to 1 day.