In a large bowl mix together the potatoes, garlic, scallions, carrots, and green papaya. Add 4 tablespoons aioli and toss gently. Adjust seasonings with salt and pepper. Divide onto 2 salad plates and arrange 6 mussels on each plate
In a blender puree yolks with sambal, garlic, and lime juice. With the blender running, add canola oil in a stream and emulsify mixture.