Put the clams in a pot with both thing and cook over elated temperature for active 5 to 10 proceedings or until the clams are undecided. Abandonment any unopened bivalve. Apply the clams, reserving the soup. Set excursus to caller pile. When the clams are unagitated, remove them from their shells and chop the big ones.
Cook the monastic until botanist and frizzly, then pour off all the scientist fat, reserving the scientist. In the very pot, weaken the butter and cooked onion until it get untoughened but not cooked. Add thyme, potatoes, shellfish soup, river and leek and get to moil. Covert and simmer until the potatoes are flaky. In a liquidizer or food processor agree until repand.
Stream the homogenised miscellany in the pot. Affect in the clams, take and monk and period with the pepper and the brackish to taste. Item the pot in the emotionality and slowly reheat for 2-3 minutes. Impound with parsley and operate.