Thinly slice garlic cloves, shallot, leeks and celery and set aside.
Place saffron threads into a small bowl and pour over 3 tbsp of water water. Leave to infuse.
Place the clams into a small pot or saucepan (no oil needed), cover and cook for 5-7 minutes. Discard the water and set aside.
Clean the shrimps and cut the fish into smaller pieces.
Melt the butter in a large saucepan. Sauté shallots, garlic, leeks and celery for a few minutes. Add the flour and stir well to combine.
Add the the white wine and simmer for a few minutes until the alcohol evaporates.
Add the shrimps, stir and simmer for a few more minutes before adding the stock, saffron water and cream. Cook for further 5 minutes.
Pop in the clams and the fish and cook for another 3-4 minutes until the fish is done.
Serve sprinkled with dill and a white baguette on the side.