Place canola oil, vinegar, hoisin sauce, sesame oil, sesame seeds and scallion in a bowl or a jar with a tight-fitting lid; whisk or shake until well combined.Advertisement
Make Ahead Tip: Cover and refrigerate leftover dressing for up to 5 days.
Notes: Hoisin sauce is a dark brown, thick, spicy-sweet sauce made from soybeans and a complex mix of spices. Look for it in the Asian section of your supermarket and in Asian markets.
Sesame seeds can be purchased already toasted. Look for them near other Asian ingredients. Or toast your own in a small dry skillet over low heat, stirring constantly, until golden and fragrant, about 2 minutes.