Boil and mash the potatoes

• Peel and chop the potatoes, then boil them until soft.
• Drain and mash until completely smooth.

Make the dough

• Add the salt and a little water to the mashed potato and mix.
• Add the potato starch and mix until a dough forms.

Shape the noodles

• Cut the dough into 9 pieces.
• Roll each piece into a thick noodle, shaping as you like.

Cook the noodles

• Drop the noodles into a pot of boiling water.
• Cook until they thicken and float to the top.

Make the spicy sauce

• In a bowl combine the garlic, chilli powder, gochujang, black vinegar, oyster sauce, MSG, sugar, light soy sauce, sesame seeds and scallion whites.
• Pour the hot oil over the mixture and stir.

Toss and serve

• Add the drained noodles to the sauce and mix well.
• Top with the scallion greens and coriander.