Peel the ginger and garlic, slice the ginger and grate the garlic! Then mix milk, broth, oil, ginger, garlic, turmeric, chilli, salt, pepper and bring to the boil! Then put everything on the lowest level and put cod in it! Cook for 4 minutes! Then take it out of the brew and keep it warm in the oven! Sieve the stock and mix with the potato flour with a little water, bind the stock with it.