Green Goddess Guacamole

to 5 anchovy filets (smashed to a paste with a fork ~or 1 to 2 1/2 teaspoons anchovy paste)

perfectly ripe avocados (cut in half, pits removed, flesh scooped out)

plain Greek or regular yogurt

fresh parsley leaves (finely chopped)

fresh tarragon leaves (finely chopped)

fresh chives (finely chopped, plus a little extra for garnish)

the juice of 1 1/2 fresh lemons (about 3 tablespoons)

garlic cloves (peeled and minced or pressed in a garlic press)