Zesty Green Goddess Dressing Recipe - Barefoot Contessa's Style

Ingredients

• 240 ml (8 fl oz) mayonnaise, good-quality
• 1 cup (240 ml) sour cream
• 1 cup (about 6-7) chopped scallions, white and green parts
• ¼ cup (60 ml) lemon juice, freshly squeezed (about 2 lemons)
• 25 g (0.88 oz) fresh basil leaves, chopped
• 2 tsp garlic, chopped (about 2 cloves)
• 2 tsp anchovy paste
• 2 tsp kosher salt
• 1 tsp black pepper, freshly ground
• 3 heads Bibb lettuce, quartered
• 2 to 3 tomatoes, ripe, cut into wedges