1 tablespoon rice vinegar
1 teaspoon red wine vinegar
1 teaspoon soy sauce
1 teaspoon white sugar
1 teaspoon Dijon mustard
2 tablespoons peanut oil
1 tablespoon sesame oil
1 1/2 pounds fresh asparagus, trimmed and cut into 2-inch pieces
1 tablespoon sesame seeds
Whisk together the rice vinegar, red wine vinegar, soy sauce, sugar, and mustard. Drizzle in the peanut oil and sesame oil while whisking vigorously to emulsify. Set aside.
Bring a pot of lightly-salted water to a boil. Add the asparagus to the water and cook 3 to 5 minutes until just tender, but still mostly firm. Remove and rinse under cold water to stop from cooking any further.
Place the asparagus in a large bowl and drizzle the dressing over the asparagus. Toss until evenly coated. Sprinkle with sesame seeds to serve.