Add olive oil and butter to a dutch oven on the stovetop over medium heat. Allow butter to melt completely. Add onion, celery, and carrot. Stir and cook until onions are translucent and carrots have become soft, about 10 minutes.
Add tomato paste, minced garlic, and seasonings. Stir and cook for just a minute.
Add the flour and stir, soaking up any extra liquid in the dutch oven. Slowly add white wine and whisk to create a thick base. Stir in Worcestershire sauce.
Add fish stock 1/2 to 1 cup at a time and stirring to maintain a thick base until all the stock is added. Add the bay leaf and thyme leaves. Allow to simmer for 25 minutes, stirring occasionally.
For a smooth bisque, use an immersion blender here. Stir in heavy cream and chopped lobster meat. Sprinkle with more fresh thyme, lemon zest, and lobster meat for serving.
If you loved Lobster Bisque please rate and comment on the recipe at https://castironrecipes.com/lobster-bisque/. Then share and tag us on Instagram @castironrecipesofficial or Facebook @castironrecipes Thanks!