Mushroom Gochujang Udon Noodles

Name: Mushroom Gochujang Udon Noodles
Ingredients: peanut or vegetable oil (for cooking); 7 oz chestnut or portobello mushrooms (sliced); 1 tsp ginger (crushed); 2 tsp garlic (crushed); 4 spring / green onions (sliced, with the green and white ends seperated); 1 cup kale (approximate - more or less is fine!); 2 portions udon noodles (I like precooked straight to wok style for ease); 1 handful cilantro (fresh coriander) leaves; 2 tbsp gochujang paste; 2 tbsp honey; 1 tbsp mirin; 1 tbsp soy sauce; 2 tsp toasted sesame oil