Ingredients

• 1/2 cup mayonnaise

• 1/2 cup sour cream

• 1/2 cup tahini

• 1/4 cup fresh lemon juice

• 6 anchovy fillets (from 1 [2-ounce] can) 

• 1 cup loosely packed fresh basil leaves

• 1 cup loosely packed fresh flat-leaf parsley leaves

• 1 cup loosely packed fresh cilantro leaves and tender stems, plus more for garnish

• 4 scallions, chopped (about 1/2 cup)

• 1/4 cup chopped fresh dill, plus more for garnish

• 1 1/4 teaspoons kosher salt, plus more to taste

• 1/4 teaspoon black pepperr, plus more to taste

• 2 small (1-pound) iceberg lettuce heads, outer leaves removed, each head cut through core into 6 wedges

• 2 Persian cucumbers, thinly sliced (about 1 1/2 cups)

• 6 medium radishes, thinly sliced (about 1 cup)

• Toasted sesame seeds, for garnish