A refreshing salad featuring crisp lettuce and a creamy herbaceous dressing, perfect for any meal.
Combine the mayonnaise, scallions, basil, lemon juice, garlic, anchovy paste, salt, and pepper in a blender.
Blend until the mixture is smooth and well combined.
Add the sour cream to the blender and pulse until just incorporated.
Avoid over-blending to maintain a creamy texture.
Cut the lettuce into quarters and remove some of the cores.
Keep the lettuce cold until serving for maximum crispness.
Slice the tomatoes into wedges.
Use a sharp knife to avoid squishing the tomatoes.
Arrange the lettuce quarters and tomato wedges on salad plates.
Arrange the components attractively for a pleasing presentation.
Drizzle the dressing over the salad and serve immediately.
Serve the dressing on the side if preferred.