Put the potato noodles in a big bowl filled with water. Soak for 50 minutes.Add the chicken, 3 cups of water, the soy sauce, dried kelp, instant coffee and the onions in a pan. Cook over a high heat for 5 minutes.Remove the kelp. Add the potatoes, garlic, ginger, sugar and rice syrup. Mix a little with a spoon, cover and cook over a medium heat for about 20 minutes.Add the carrots, replace the cover and cook for 1 minute.Add the Ddeokbokki (Korean Rice Cakes), dried chillies, soaked noodles, spring onions (leaving a little for a garnish) and black pepper. Cover and cook for 7-8 minutes over a medium heat.It is ready to eat. Garnish with the left over spring onions and some roasted sesame seeds. Enjoy Andong Jjimdak with a bowl of rice and your favourite drink.