Combine cashews, hoisin sauce, garlic, green onion, cayenne pepper and black pepper in a blender or food processor and mix until smooth.
In a small sauce pan add oil, honey, rice wine vinegar and tamarind pulp.
Heat at medium for 1 minute.
Stir until the tamarind pulp is completely dissolved.
Add this to the cashew mixture and process until smooth
Pour into a serving bowl and sprinkle with toasted sesame seeds.
Refrigerate for at least 30 minutes