In a food processor, combine powdered peanut butter, water, sesame oil and rice wine vinegar. Blend for 10 to 15 seconds until combined.
Add scallions, ginger, sriracha and fish sauce. Blend until scallions and ginger are finely minced and incorporated.
Add peanuts and pulse so the pieces are broken, not blended. It should resemble 'chunky peanut butter' pieces or larger.
Add this dressing to a healthy salad to add an equally healthy addition of flavor. This tastes great on salmon as well!