Udon noodle stir fry with pork tenderloin and vegetables

Ingredients

• 1 Quebec pork tenderloin, about ¾ lb. (340 g)
• 1½ tsp. 7.5 mL Chinese five-spice
• 4 tbsp. 60 mL vegetable oil, divided
• 3 cups 750 mL small broccoli florets
• 1 red bell pepper, seeded and cut into strips
• 1 container (5 oz./146 g) baby spinach
• 3 green onions, chopped, white and green parts separated
• 3 cloves garlic, minced
• 1 tbsp. 15 mL fresh ginger, finely minced
• 2 lbs. 900 g fresh udon noodles
• Lime wedges, to taste

Sauce

• ½ cup 125 mL chicken broth
• 6 tbsp. 90 mL soy sauce
• 2 tbsp. 30 mL fish sauce
• 2 tbsp. 30 mL brown sugar
• 1 tbsp. 15 mL cornstarch
• 1 tbsp. 15 mL lime juice
• ½ tsp. 2.5 mL sambal oelek, or more to taste