Crispy Sesame Duck Ramen

• 400 grams duck breasts, 2 medium sized
• 4 cakes dried ramen noodles
• 3 tsp sesame oil, divided
• 4 cups chicken or mushroom broth
• 2 tbsp miso paste, white or red
• 1/2 lbs (225 gr) mushrooms, such as button, cremini, shimeji, etc.
• 1 lbs (454 gr) asparagus stalks or broccolini, trimmed
• 2 medium carrots, peeled and thinly sliced
• 1 tbsp sesame seeds, preferably toasted
• 1/2 tsp kosher salt
• 1/2 tsp ground black pepper

optional garnishes:

• cilantro, sliced thai chilies, crushed peanuts, etc.