1. In a KitchenAid blender, combine the avocado, mayonnaise, green onion, garlic, lemon juice, tarragon, anchovies, salt and pepper. Process until smooth, adding water if necessary.
2. Chill for 24 hours before serving.
1 avocado, peeled and pitted
1 cup mayonnaise
2 tbsp green onion
1 garlic clove
1 tbsp lemon juice
1 tsp tarragon, fresh or dried
5 anchovies
salt and pepper, to taste
