1 Soak the beans for 12 hours in cold water, changing the water several times. The next day, rinse them and cook them for 50 minutes in a pan of cold water, with half of the lemongrass. Drain
2 In another saucepan, reduce the fish stock by 1/3 with the other half of the lemongrass. Pour the coconut milk and cook for 5 minutes. Salt and pepper. Filter the stock, add 2 tablespoons of beans and mix. Add the rest of the beans and keep warm.
3 Cut the salmon into pieces, cook them in an oiled frying pan for 2 to 3 minutes. Add them to the coconut mixture and cook for 5 minutes. Thinly slice and chop the coriander, sprinkle it and serve.