
In a bowl, mix together peanut butter, mayonnaise, rice vinegar, soy sauce, water, olive oil and sugar. Stir well until smooth. I recommend starting with 1½ teaspoons of soy sauce and 2 tablespoons of water, and then taste and adjust the consistency, acidity and saltiness/sweetness to your liking. Stir in roasted peanuts. Place the dressing in the refrigerator for about 5 minutes or until ready to serve the salad.
Discard the outer leaves of the iceberg lettuce head. Slice through the core into wedges. You can cut the end to remove the stem and core, but make sure each wedge can hold together.
Dice 1-2 cherry tomatoes and quarter the remaining. Arrange iceberg wedges on clean plates and scatter cherry tomato wedges around. Drizzle the dressing generously over the lettuce. Sprinkle diced tomatoes, chopped herbs and crushed peanuts on top. Serve right away.