Mix the chopped chilli pepper, lemon juice, soy sauce, coriander root, garlic, fish sauce and soy sauce in the chicken broth. The taste should be sour.
Now put about 5 cm of water in a wok with a steamer insert (a normal, large pan with a tightly fitting lid will do the same) and bring to the boil. Place the fish on a plate and cut several times on both sides with a sharp knife. Spread the coriander stalks around it. Pour the sauce over the fish and steam for approx. 10 minutes in a wok with a steamer insert. Then add the spring onions and steam for another 2 to 3 minutes.
For the dip, crush the peeled garlic with the chilli peppers, salt and coriander roots in a mortar. Mix in the fish sauce, lime juice and sugar and season to taste. Add the coriander greens and season to taste. Serve with the fish.