Easy Mongolian Beef (Better than takeout!)

Ingredients

• 1 ½ lb. flank steak (cut in 1/4 inch strips against the grain)
• 1/3 cup cornstarch
• 1 Tbsp. soy sauce
• 1 Tbsp. shaoxing wine
• 1/2 tsp. baking soda
• ~6 Tbsp. canola oil
• 2 tsp. garlic (crushed)
• 2 tsp. ginger (finely minced)
• 1/2 cup dark brown sugar (packed)
• 1/2 cup soy sauce
• 1/2 cup beef broth (or water)
• 2 tsp. sesame oil
• 1 tsp. dark soy sauce (optional, adding more as desired )
• 1/2 bunch green onions (cut into 2 inch sections)
• 1/4 cup dried red chili peppers (optional)