In a medium to large saucepan combine onions, celery & potatoes. Pour clam juice over vegetables. Add enough water to barely cover vegetables. Bring to boil then reduce heat to medium & simmer until potatoes are tender (approximately 20 minutes).
Meanwhile, in a small sauce pan, melt butter. When melted, add flour, blend & cook for 2 minutes. Add half & half & cook, stirring until smooth & creamy. Drain vegetables, reserving liquid. Return vegetables to saucepan. Add clams & sauce mixture. Heat thoroughly (add reserved cooking liquid to make consistency to your taste.
Slice carrots, celery, & potatoes into bite sized pieces & place into a large stock pot or Dutch oven. Thinly slice garlic, onlion (or shallots), & parsley & add to the vegetation.
Add chicken stock to pot until it just covers the vegetables; if thgere is not enough to cover then add water until covered. Bring to a boil then simmer until carrots & potatoes are fork tender.
In a small sauce pan, melt butter over medium heat & add flour after it has melted. Whisk until smooth & fully combined. Continue to whisk & add 1 can of condensed milk as the roué begins to thicken & boil. Add a second can of milk & allow roué to thicken.
Add your roué & remaining can of milk to the vegetables & allow the new mixture to return to a simmer. Add Worcestershire sauce, hot sauce, cooked bacon, & salt & pepper to taste.
Allow the soup to come back to a simmer & allow to simmer about 1 hour on low heat to allow flavors to combine. Serve & enjoy.
Chef’s Note: You can also make this into Clam Chowder by adding 1lb of steamed fresh clams (12 oz canned clams, drained works too) to the soup about 10 minutes before serving. Make it into a chicken corn chowder by adding 4 boneless, skinless chicken breasts (boiled & shredded) & 1 can whole kernel corn into the soup at the same time as the sauces, bacon, and spice (step 4). If thickness of soup is not to your liking when completed, whisk 1 tsp of cornstarch & 1 tbsp of water together until the cornstarch is dissolved. Add this mixture to the soup & it should thicken immediately. Be aware that the roué will not thicken until it reaches a boiling point.